31221120

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:153

約数の個数: 256

約数和(自身を含む): 119854080

約数和(自身を除く): 88632960

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 64, 69, 70, 80, 84, 92, 96, 101, 105, 112, 115, 120, 128, 138, 140, 160, 161, 168, 184, 192, 202, 210, 224, 230, 240, 276, 280, 303, 320, 322, 336, 345, 368, 384, 404, 420, 448, 460, 480, 483, 505, 552, 560, 606, 640, 644, 672, 690, 707, 736, 805, 808, 840, 896, 920, 960, 966, 1010, 1104, 1120, 1212, 1288, 1344, 1380, 1414, 1472, 1515, 1610, 1616, 1680, 1840, 1920, 1932, 2020, 2121, 2208, 2240, 2323, 2415, 2424, 2576, 2688, 2760, 2828, 2944, 3030, 3220, 3232, 3360, 3535, 3680, 3864, 4040, 4242, 4416, 4480, 4646, 4830, 4848, 5152, 5520, 5656, 6060, 6440, 6464, 6720, 6969, 7070, 7360, 7728, 8080, 8484, 8832, 9292, 9660, 9696, 10304, 10605, 11040, 11312, 11615, 12120, 12880, 12928, 13440, 13938, 14140, 14720, 15456, 16160, 16261, 16968, 18584, 19320, 19392, 20608, 21210, 22080, 22624, 23230, 24240, 25760, 27876, 28280, 30912, 32320, 32522, 33936, 34845, 37168, 38640, 38784, 42420, 44160, 45248, 46460, 48480, 48783, 51520, 55752, 56560, 61824, 64640, 65044, 67872, 69690, 74336, 77280, 81305, 84840, 90496, 92920, 96960, 97566, 103040, 111504, 113120, 130088, 135744, 139380, 148672, 154560, 162610, 169680, 185840, 193920, 195132, 223008, 226240, 243915, 260176, 271488, 278760, 297344, 309120, 325220, 339360, 371680, 390264, 446016, 452480, 487830, 520352, 557520, 650440, 678720, 743360, 780528, 892032, 975660, 1040704, 1115040, 1300880, 1357440, 1486720, 1561056, 1951320, 2081408, 2230080, 2601760, 3122112, 3902640, 4460160, 5203520, 6244224, 7805280, 10407040, 15610560, 31221120]

約数ペア:

[(1, 31221120), (2, 15610560), (3, 10407040), (4, 7805280), (5, 6244224), (6, 5203520), (7, 4460160), (8, 3902640), (10, 3122112), (12, 2601760), (14, 2230080), (15, 2081408), (16, 1951320), (20, 1561056), (21, 1486720), (23, 1357440), (24, 1300880), (28, 1115040), (30, 1040704), (32, 975660), (35, 892032), (40, 780528), (42, 743360), (46, 678720), (48, 650440), (56, 557520), (60, 520352), (64, 487830), (69, 452480), (70, 446016), (80, 390264), (84, 371680), (92, 339360), (96, 325220), (101, 309120), (105, 297344), (112, 278760), (115, 271488), (120, 260176), (128, 243915), (138, 226240), (140, 223008), (160, 195132), (161, 193920), (168, 185840), (184, 169680), (192, 162610), (202, 154560), (210, 148672), (224, 139380), (230, 135744), (240, 130088), (276, 113120), (280, 111504), (303, 103040), (320, 97566), (322, 96960), (336, 92920), (345, 90496), (368, 84840), (384, 81305), (404, 77280), (420, 74336), (448, 69690), (460, 67872), (480, 65044), (483, 64640), (505, 61824), (552, 56560), (560, 55752), (606, 51520), (640, 48783), (644, 48480), (672, 46460), (690, 45248), (707, 44160), (736, 42420), (805, 38784), (808, 38640), (840, 37168), (896, 34845), (920, 33936), (960, 32522), (966, 32320), (1010, 30912), (1104, 28280), (1120, 27876), (1212, 25760), (1288, 24240), (1344, 23230), (1380, 22624), (1414, 22080), (1472, 21210), (1515, 20608), (1610, 19392), (1616, 19320), (1680, 18584), (1840, 16968), (1920, 16261), (1932, 16160), (2020, 15456), (2121, 14720), (2208, 14140), (2240, 13938), (2323, 13440), (2415, 12928), (2424, 12880), (2576, 12120), (2688, 11615), (2760, 11312), (2828, 11040), (2944, 10605), (3030, 10304), (3220, 9696), (3232, 9660), (3360, 9292), (3535, 8832), (3680, 8484), (3864, 8080), (4040, 7728), (4242, 7360), (4416, 7070), (4480, 6969), (4646, 6720), (4830, 6464), (4848, 6440), (5152, 6060), (5520, 5656)]