21729702980

素因数分解:

$2^2\times 5^1\times {\mathrm{2699}}^1\times {\mathrm{402551}}^1$

素因数の和:405259

約数の個数: 24

約数和(自身を含む): 45649396800

約数和(自身を除く): 23919693820

約数列:

[1, 2, 4, 5, 10, 20, 2699, 5398, 10796, 13495, 26990, 53980, 402551, 805102, 1610204, 2012755, 4025510, 8051020, 1086485149, 2172970298, 4345940596, 5432425745, 10864851490, 21729702980]

約数ペア:

[(1, 21729702980), (2, 10864851490), (4, 5432425745), (5, 4345940596), (10, 2172970298), (20, 1086485149), (2699, 8051020), (5398, 4025510), (10796, 2012755), (13495, 1610204), (26990, 805102), (53980, 402551)]