21000306620

素因数分解:

$2^2\times 5^1\times {\mathrm{379}}^1\times {\mathrm{2770489}}^1$

素因数の和:2770877

約数の個数: 24

約数和(自身を含む): 44217020400

約数和(自身を除く): 23216713780

約数列:

[1, 2, 4, 5, 10, 20, 379, 758, 1516, 1895, 3790, 7580, 2770489, 5540978, 11081956, 13852445, 27704890, 55409780, 1050015331, 2100030662, 4200061324, 5250076655, 10500153310, 21000306620]

約数ペア:

[(1, 21000306620), (2, 10500153310), (4, 5250076655), (5, 4200061324), (10, 2100030662), (20, 1050015331), (379, 55409780), (758, 27704890), (1516, 13852445), (1895, 11081956), (3790, 5540978), (7580, 2770489)]