129849320

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{7937}}^1$

素因数の和:8357

約数の個数: 32

約数和(自身を含む): 292912200

約数和(自身を除く): 163062880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1636, 2045, 3272, 4090, 7937, 8180, 15874, 16360, 31748, 39685, 63496, 79370, 158740, 317480, 3246233, 6492466, 12984932, 16231165, 25969864, 32462330, 64924660, 129849320]

約数ペア:

[(1, 129849320), (2, 64924660), (4, 32462330), (5, 25969864), (8, 16231165), (10, 12984932), (20, 6492466), (40, 3246233), (409, 317480), (818, 158740), (1636, 79370), (2045, 63496), (3272, 39685), (4090, 31748), (7937, 16360), (8180, 15874)]