31979440

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{3881}}^1$

素因数の和:3997

約数の個数: 40

約数和(自身を含む): 75093408

約数和(自身を除く): 43113968

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 3881, 4120, 7762, 8240, 15524, 19405, 31048, 38810, 62096, 77620, 155240, 310480, 399743, 799486, 1598972, 1998715, 3197944, 3997430, 6395888, 7994860, 15989720, 31979440]

約数ペア:

[(1, 31979440), (2, 15989720), (4, 7994860), (5, 6395888), (8, 3997430), (10, 3197944), (16, 1998715), (20, 1598972), (40, 799486), (80, 399743), (103, 310480), (206, 155240), (412, 77620), (515, 62096), (824, 38810), (1030, 31048), (1648, 19405), (2060, 15524), (3881, 8240), (4120, 7762)]