21409160

素因数分解:

$2^3\times 5^1\times {\mathrm{535229}}^1$

素因数の和:535240

約数の個数: 16

約数和(自身を含む): 48170700

約数和(自身を除く): 26761540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 535229, 1070458, 2140916, 2676145, 4281832, 5352290, 10704580, 21409160]

約数ペア:

[(1, 21409160), (2, 10704580), (4, 5352290), (5, 4281832), (8, 2676145), (10, 2140916), (20, 1070458), (40, 535229)]