80523940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{8101}}^1$

素因数の和:8188

約数の個数: 48

約数和(自身を含む): 196003584

約数和(自身を除く): 115479644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 8101, 9940, 16202, 32404, 40505, 56707, 81010, 113414, 162020, 226828, 283535, 567070, 575171, 1134140, 1150342, 2300684, 2875855, 4026197, 5751710, 8052394, 11503420, 16104788, 20130985, 40261970, 80523940]

約数ペア:

[(1, 80523940), (2, 40261970), (4, 20130985), (5, 16104788), (7, 11503420), (10, 8052394), (14, 5751710), (20, 4026197), (28, 2875855), (35, 2300684), (70, 1150342), (71, 1134140), (140, 575171), (142, 567070), (284, 283535), (355, 226828), (497, 162020), (710, 113414), (994, 81010), (1420, 56707), (1988, 40505), (2485, 32404), (4970, 16202), (8101, 9940)]