20265627520

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{499}}^1$

素因数の和:661

約数の個数: 256

約数和(自身を含む): 52876800000

約数和(自身を除く): 32611172480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 89, 92, 115, 124, 128, 155, 160, 178, 184, 230, 248, 310, 320, 356, 368, 445, 460, 496, 499, 620, 640, 712, 713, 736, 890, 920, 992, 998, 1240, 1424, 1426, 1472, 1780, 1840, 1984, 1996, 2047, 2480, 2495, 2759, 2848, 2852, 2944, 3560, 3565, 3680, 3968, 3992, 4094, 4960, 4990, 5518, 5696, 5704, 7120, 7130, 7360, 7984, 8188, 9920, 9980, 10235, 11036, 11392, 11408, 11477, 13795, 14240, 14260, 14720, 15469, 15968, 16376, 19840, 19960, 20470, 22072, 22816, 22954, 27590, 28480, 28520, 30938, 31936, 32752, 39920, 40940, 44144, 44411, 45632, 45908, 55180, 56960, 57040, 57385, 61876, 63457, 63872, 65504, 77345, 79840, 81880, 88288, 88822, 91264, 91816, 110360, 114080, 114770, 123752, 126914, 131008, 154690, 159680, 163760, 176576, 177644, 183632, 220720, 222055, 228160, 229540, 247504, 253828, 262016, 309380, 317285, 319360, 327520, 353152, 355288, 355787, 367264, 441440, 444110, 456320, 459080, 495008, 507656, 618760, 634570, 655040, 710576, 711574, 734528, 882880, 888220, 918160, 990016, 1015312, 1021453, 1237520, 1269140, 1310080, 1376741, 1421152, 1423148, 1469056, 1765760, 1776440, 1778935, 1836320, 1980032, 2030624, 2042906, 2475040, 2538280, 2753482, 2842304, 2846296, 3552880, 3557870, 3672640, 4061248, 4085812, 4950080, 5076560, 5107265, 5506964, 5684608, 5692592, 6883705, 7105760, 7115740, 7345280, 8122496, 8171624, 9900160, 10153120, 10214530, 11013928, 11385184, 13767410, 14211520, 14231480, 16343248, 20306240, 20429060, 22027856, 22770368, 27534820, 28423040, 28462960, 31665043, 32686496, 40612480, 40858120, 44055712, 45540736, 55069640, 56925920, 63330086, 65372992, 81716240, 88111424, 110139280, 113851840, 126660172, 130745984, 158325215, 163432480, 176222848, 220278560, 227703680, 253320344, 316650430, 326864960, 440557120, 506640688, 633300860, 653729920, 881114240, 1013281376, 1266601720, 2026562752, 2533203440, 4053125504, 5066406880, 10132813760, 20265627520]

約数ペア:

[(1, 20265627520), (2, 10132813760), (4, 5066406880), (5, 4053125504), (8, 2533203440), (10, 2026562752), (16, 1266601720), (20, 1013281376), (23, 881114240), (31, 653729920), (32, 633300860), (40, 506640688), (46, 440557120), (62, 326864960), (64, 316650430), (80, 253320344), (89, 227703680), (92, 220278560), (115, 176222848), (124, 163432480), (128, 158325215), (155, 130745984), (160, 126660172), (178, 113851840), (184, 110139280), (230, 88111424), (248, 81716240), (310, 65372992), (320, 63330086), (356, 56925920), (368, 55069640), (445, 45540736), (460, 44055712), (496, 40858120), (499, 40612480), (620, 32686496), (640, 31665043), (712, 28462960), (713, 28423040), (736, 27534820), (890, 22770368), (920, 22027856), (992, 20429060), (998, 20306240), (1240, 16343248), (1424, 14231480), (1426, 14211520), (1472, 13767410), (1780, 11385184), (1840, 11013928), (1984, 10214530), (1996, 10153120), (2047, 9900160), (2480, 8171624), (2495, 8122496), (2759, 7345280), (2848, 7115740), (2852, 7105760), (2944, 6883705), (3560, 5692592), (3565, 5684608), (3680, 5506964), (3968, 5107265), (3992, 5076560), (4094, 4950080), (4960, 4085812), (4990, 4061248), (5518, 3672640), (5696, 3557870), (5704, 3552880), (7120, 2846296), (7130, 2842304), (7360, 2753482), (7984, 2538280), (8188, 2475040), (9920, 2042906), (9980, 2030624), (10235, 1980032), (11036, 1836320), (11392, 1778935), (11408, 1776440), (11477, 1765760), (13795, 1469056), (14240, 1423148), (14260, 1421152), (14720, 1376741), (15469, 1310080), (15968, 1269140), (16376, 1237520), (19840, 1021453), (19960, 1015312), (20470, 990016), (22072, 918160), (22816, 888220), (22954, 882880), (27590, 734528), (28480, 711574), (28520, 710576), (30938, 655040), (31936, 634570), (32752, 618760), (39920, 507656), (40940, 495008), (44144, 459080), (44411, 456320), (45632, 444110), (45908, 441440), (55180, 367264), (56960, 355787), (57040, 355288), (57385, 353152), (61876, 327520), (63457, 319360), (63872, 317285), (65504, 309380), (77345, 262016), (79840, 253828), (81880, 247504), (88288, 229540), (88822, 228160), (91264, 222055), (91816, 220720), (110360, 183632), (114080, 177644), (114770, 176576), (123752, 163760), (126914, 159680), (131008, 154690)]