21073870

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{49009}}^1$

素因数の和:49059

約数の個数: 16

約数和(自身を含む): 38815920

約数和(自身を除く): 17742050

約数列:

[1, 2, 5, 10, 43, 86, 215, 430, 49009, 98018, 245045, 490090, 2107387, 4214774, 10536935, 21073870]

約数ペア:

[(1, 21073870), (2, 10536935), (5, 4214774), (10, 2107387), (43, 490090), (86, 245045), (215, 98018), (430, 49009)]