21700456

素因数分解:

$2^3\times {\mathrm{101}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 41640480

約数和(自身を除く): 19940024

約数列:

[1, 2, 4, 8, 101, 107, 202, 214, 251, 404, 428, 502, 808, 856, 1004, 2008, 10807, 21614, 25351, 26857, 43228, 50702, 53714, 86456, 101404, 107428, 202808, 214856, 2712557, 5425114, 10850228, 21700456]

約数ペア:

[(1, 21700456), (2, 10850228), (4, 5425114), (8, 2712557), (101, 214856), (107, 202808), (202, 107428), (214, 101404), (251, 86456), (404, 53714), (428, 50702), (502, 43228), (808, 26857), (856, 25351), (1004, 21614), (2008, 10807)]