21619792

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32957}}^1$

素因数の和:33006

約数の個数: 20

約数和(自身を含む): 42911316

約数和(自身を除く): 21291524

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32957, 65914, 131828, 263656, 527312, 1351237, 2702474, 5404948, 10809896, 21619792]

約数ペア:

[(1, 21619792), (2, 10809896), (4, 5404948), (8, 2702474), (16, 1351237), (41, 527312), (82, 263656), (164, 131828), (328, 65914), (656, 32957)]