18661867

素因数分解:

$7^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1$

素因数の和:618

約数の個数: 16

約数和(自身を含む): 21998592

約数和(自身を除く): 3336725

約数列:

[1, 7, 47, 131, 329, 433, 917, 3031, 6157, 20351, 43099, 56723, 142457, 397061, 2665981, 18661867]

約数ペア:

[(1, 18661867), (7, 2665981), (47, 397061), (131, 142457), (329, 56723), (433, 43099), (917, 20351), (3031, 6157)]