209921704

素因数分解:

$2^3\times {\mathrm{409}}^1\times {\mathrm{64157}}^1$

素因数の和:64572

約数の個数: 16

約数和(自身を含む): 394571700

約数和(自身を除く): 184649996

約数列:

[1, 2, 4, 8, 409, 818, 1636, 3272, 64157, 128314, 256628, 513256, 26240213, 52480426, 104960852, 209921704]

約数ペア:

[(1, 209921704), (2, 104960852), (4, 52480426), (8, 26240213), (409, 513256), (818, 256628), (1636, 128314), (3272, 64157)]