640729968

素因数分解:

$2^4\times 3^1\times {\mathrm{521}}^1\times {\mathrm{25621}}^1$

素因数の和:26153

約数の個数: 40

約数和(自身を含む): 1658460816

約数和(自身を除く): 1017730848

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 521, 1042, 1563, 2084, 3126, 4168, 6252, 8336, 12504, 25008, 25621, 51242, 76863, 102484, 153726, 204968, 307452, 409936, 614904, 1229808, 13348541, 26697082, 40045623, 53394164, 80091246, 106788328, 160182492, 213576656, 320364984, 640729968]

約数ペア:

[(1, 640729968), (2, 320364984), (3, 213576656), (4, 160182492), (6, 106788328), (8, 80091246), (12, 53394164), (16, 40045623), (24, 26697082), (48, 13348541), (521, 1229808), (1042, 614904), (1563, 409936), (2084, 307452), (3126, 204968), (4168, 153726), (6252, 102484), (8336, 76863), (12504, 51242), (25008, 25621)]