21418310

素因数分解:

$2^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{4111}}^1$

素因数の和:4639

約数の個数: 16

約数和(自身を含む): 38636352

約数和(自身を除く): 17218042

約数列:

[1, 2, 5, 10, 521, 1042, 2605, 4111, 5210, 8222, 20555, 41110, 2141831, 4283662, 10709155, 21418310]

約数ペア:

[(1, 21418310), (2, 10709155), (5, 4283662), (10, 2141831), (521, 41110), (1042, 20555), (2605, 8222), (4111, 5210)]