220985360

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89107}}^1$

素因数の和:89151

約数の個数: 40

約数和(自身を含む): 530370816

約数和(自身を除く): 309385456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 89107, 178214, 356428, 445535, 712856, 891070, 1425712, 1782140, 2762317, 3564280, 5524634, 7128560, 11049268, 13811585, 22098536, 27623170, 44197072, 55246340, 110492680, 220985360]

約数ペア:

[(1, 220985360), (2, 110492680), (4, 55246340), (5, 44197072), (8, 27623170), (10, 22098536), (16, 13811585), (20, 11049268), (31, 7128560), (40, 5524634), (62, 3564280), (80, 2762317), (124, 1782140), (155, 1425712), (248, 891070), (310, 712856), (496, 445535), (620, 356428), (1240, 178214), (2480, 89107)]