81053840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:110

約数の個数: 240

約数和(自身を含む): 244270080

約数和(自身を除く): 163216240

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 29, 31, 35, 40, 46, 49, 56, 58, 62, 70, 80, 92, 98, 112, 115, 116, 124, 140, 145, 155, 161, 184, 196, 203, 217, 230, 232, 245, 248, 280, 290, 310, 322, 368, 392, 406, 434, 460, 464, 490, 496, 560, 580, 620, 644, 667, 713, 784, 805, 812, 868, 899, 920, 980, 1015, 1085, 1127, 1160, 1240, 1288, 1334, 1421, 1426, 1519, 1610, 1624, 1736, 1798, 1840, 1960, 2030, 2170, 2254, 2320, 2480, 2576, 2668, 2842, 2852, 3038, 3220, 3248, 3335, 3472, 3565, 3596, 3920, 4060, 4340, 4495, 4508, 4669, 4991, 5336, 5635, 5684, 5704, 6076, 6293, 6440, 6670, 7105, 7130, 7192, 7595, 8120, 8680, 8990, 9016, 9338, 9982, 10672, 11270, 11368, 11408, 12152, 12586, 12880, 13340, 14210, 14260, 14384, 15190, 16240, 17360, 17980, 18032, 18676, 19964, 20677, 22540, 22736, 23345, 24304, 24955, 25172, 26680, 28420, 28520, 30380, 31465, 32683, 34937, 35960, 37352, 39928, 41354, 44051, 45080, 46690, 49910, 50344, 53360, 56840, 57040, 60760, 62930, 65366, 69874, 71920, 74704, 79856, 82708, 88102, 90160, 93380, 99820, 100688, 103385, 113680, 121520, 125860, 130732, 139748, 144739, 163415, 165416, 174685, 176204, 186760, 199640, 206770, 220255, 251720, 261464, 279496, 289478, 326830, 330832, 349370, 352408, 373520, 399280, 413540, 440510, 503440, 522928, 558992, 578956, 653660, 698740, 704816, 723695, 827080, 881020, 1013173, 1157912, 1307320, 1397480, 1447390, 1654160, 1762040, 2026346, 2315824, 2614640, 2794960, 2894780, 3524080, 4052692, 5065865, 5789560, 8105384, 10131730, 11579120, 16210768, 20263460, 40526920, 81053840]

約数ペア:

[(1, 81053840), (2, 40526920), (4, 20263460), (5, 16210768), (7, 11579120), (8, 10131730), (10, 8105384), (14, 5789560), (16, 5065865), (20, 4052692), (23, 3524080), (28, 2894780), (29, 2794960), (31, 2614640), (35, 2315824), (40, 2026346), (46, 1762040), (49, 1654160), (56, 1447390), (58, 1397480), (62, 1307320), (70, 1157912), (80, 1013173), (92, 881020), (98, 827080), (112, 723695), (115, 704816), (116, 698740), (124, 653660), (140, 578956), (145, 558992), (155, 522928), (161, 503440), (184, 440510), (196, 413540), (203, 399280), (217, 373520), (230, 352408), (232, 349370), (245, 330832), (248, 326830), (280, 289478), (290, 279496), (310, 261464), (322, 251720), (368, 220255), (392, 206770), (406, 199640), (434, 186760), (460, 176204), (464, 174685), (490, 165416), (496, 163415), (560, 144739), (580, 139748), (620, 130732), (644, 125860), (667, 121520), (713, 113680), (784, 103385), (805, 100688), (812, 99820), (868, 93380), (899, 90160), (920, 88102), (980, 82708), (1015, 79856), (1085, 74704), (1127, 71920), (1160, 69874), (1240, 65366), (1288, 62930), (1334, 60760), (1421, 57040), (1426, 56840), (1519, 53360), (1610, 50344), (1624, 49910), (1736, 46690), (1798, 45080), (1840, 44051), (1960, 41354), (2030, 39928), (2170, 37352), (2254, 35960), (2320, 34937), (2480, 32683), (2576, 31465), (2668, 30380), (2842, 28520), (2852, 28420), (3038, 26680), (3220, 25172), (3248, 24955), (3335, 24304), (3472, 23345), (3565, 22736), (3596, 22540), (3920, 20677), (4060, 19964), (4340, 18676), (4495, 18032), (4508, 17980), (4669, 17360), (4991, 16240), (5336, 15190), (5635, 14384), (5684, 14260), (5704, 14210), (6076, 13340), (6293, 12880), (6440, 12586), (6670, 12152), (7105, 11408), (7130, 11368), (7192, 11270), (7595, 10672), (8120, 9982), (8680, 9338), (8990, 9016)]