21377240

素因数分解:

$2^3\times 5^1\times {\mathrm{534431}}^1$

素因数の和:534442

約数の個数: 16

約数和(自身を含む): 48098880

約数和(自身を除く): 26721640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 534431, 1068862, 2137724, 2672155, 4275448, 5344310, 10688620, 21377240]

約数ペア:

[(1, 21377240), (2, 10688620), (4, 5344310), (5, 4275448), (8, 2672155), (10, 2137724), (20, 1068862), (40, 534431)]