63939640

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{5107}}^1$

素因数の和:5431

約数の個数: 32

約数和(自身を含む): 144352080

約数和(自身を除く): 80412440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 1252, 1565, 2504, 3130, 5107, 6260, 10214, 12520, 20428, 25535, 40856, 51070, 102140, 204280, 1598491, 3196982, 6393964, 7992455, 12787928, 15984910, 31969820, 63939640]

約数ペア:

[(1, 63939640), (2, 31969820), (4, 15984910), (5, 12787928), (8, 7992455), (10, 6393964), (20, 3196982), (40, 1598491), (313, 204280), (626, 102140), (1252, 51070), (1565, 40856), (2504, 25535), (3130, 20428), (5107, 12520), (6260, 10214)]