87281240

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{35771}}^1$

素因数の和:35843

約数の個数: 32

約数和(自身を含む): 199607760

約数和(自身を除く): 112326520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 35771, 71542, 143084, 178855, 286168, 357710, 715420, 1430840, 2182031, 4364062, 8728124, 10910155, 17456248, 21820310, 43640620, 87281240]

約数ペア:

[(1, 87281240), (2, 43640620), (4, 21820310), (5, 17456248), (8, 10910155), (10, 8728124), (20, 4364062), (40, 2182031), (61, 1430840), (122, 715420), (244, 357710), (305, 286168), (488, 178855), (610, 143084), (1220, 71542), (2440, 35771)]