20177896528

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{113}}^1\times {\mathrm{521}}^1\times {\mathrm{691}}^1$

素因数の和:1364

約数の個数: 80

約数和(自身を含む): 40850099712

約数和(自身を除く): 20672203184

約数列:

[1, 2, 4, 8, 16, 31, 62, 113, 124, 226, 248, 452, 496, 521, 691, 904, 1042, 1382, 1808, 2084, 2764, 3503, 4168, 5528, 7006, 8336, 11056, 14012, 16151, 21421, 28024, 32302, 42842, 56048, 58873, 64604, 78083, 85684, 117746, 129208, 156166, 171368, 235492, 258416, 312332, 342736, 360011, 470984, 624664, 720022, 941968, 1249328, 1440044, 1825063, 2420573, 2880088, 3650126, 4841146, 5760176, 7300252, 9682292, 11160341, 14600504, 19364584, 22320682, 29201008, 38729168, 40681243, 44641364, 81362486, 89282728, 162724972, 178565456, 325449944, 650899888, 1261118533, 2522237066, 5044474132, 10088948264, 20177896528]

約数ペア:

[(1, 20177896528), (2, 10088948264), (4, 5044474132), (8, 2522237066), (16, 1261118533), (31, 650899888), (62, 325449944), (113, 178565456), (124, 162724972), (226, 89282728), (248, 81362486), (452, 44641364), (496, 40681243), (521, 38729168), (691, 29201008), (904, 22320682), (1042, 19364584), (1382, 14600504), (1808, 11160341), (2084, 9682292), (2764, 7300252), (3503, 5760176), (4168, 4841146), (5528, 3650126), (7006, 2880088), (8336, 2420573), (11056, 1825063), (14012, 1440044), (16151, 1249328), (21421, 941968), (28024, 720022), (32302, 624664), (42842, 470984), (56048, 360011), (58873, 342736), (64604, 312332), (78083, 258416), (85684, 235492), (117746, 171368), (129208, 156166)]