64691860

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{38971}}^1$

素因数の和:39063

約数の個数: 24

約数和(自身を含む): 137493216

約数和(自身を除く): 72801356

約数列:

[1, 2, 4, 5, 10, 20, 83, 166, 332, 415, 830, 1660, 38971, 77942, 155884, 194855, 389710, 779420, 3234593, 6469186, 12938372, 16172965, 32345930, 64691860]

約数ペア:

[(1, 64691860), (2, 32345930), (4, 16172965), (5, 12938372), (10, 6469186), (20, 3234593), (83, 779420), (166, 389710), (332, 194855), (415, 155884), (830, 77942), (1660, 38971)]