20171851870

素因数分解:

$2^1\times 5^1\times {\mathrm{397}}^1\times {\mathrm{401}}^1\times {\mathrm{12671}}^1$

素因数の和:13476

約数の個数: 32

約数和(自身を含む): 36494447616

約数和(自身を除く): 16322595746

約数列:

[1, 2, 5, 10, 397, 401, 794, 802, 1985, 2005, 3970, 4010, 12671, 25342, 63355, 126710, 159197, 318394, 795985, 1591970, 5030387, 5081071, 10060774, 10162142, 25151935, 25405355, 50303870, 50810710, 2017185187, 4034370374, 10085925935, 20171851870]

約数ペア:

[(1, 20171851870), (2, 10085925935), (5, 4034370374), (10, 2017185187), (397, 50810710), (401, 50303870), (794, 25405355), (802, 25151935), (1985, 10162142), (2005, 10060774), (3970, 5081071), (4010, 5030387), (12671, 1591970), (25342, 795985), (63355, 318394), (126710, 159197)]