137720920

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{56443}}^1$

素因数の和:56515

約数の個数: 32

約数和(自身を含む): 314957520

約数和(自身を除く): 177236600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 56443, 112886, 225772, 282215, 451544, 564430, 1128860, 2257720, 3443023, 6886046, 13772092, 17215115, 27544184, 34430230, 68860460, 137720920]

約数ペア:

[(1, 137720920), (2, 68860460), (4, 34430230), (5, 27544184), (8, 17215115), (10, 13772092), (20, 6886046), (40, 3443023), (61, 2257720), (122, 1128860), (244, 564430), (305, 451544), (488, 282215), (610, 225772), (1220, 112886), (2440, 56443)]