20862980

素因数分解:

$2^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{7001}}^1$

素因数の和:7159

約数の個数: 24

約数和(自身を含む): 44112600

約数和(自身を除く): 23249620

約数列:

[1, 2, 4, 5, 10, 20, 149, 298, 596, 745, 1490, 2980, 7001, 14002, 28004, 35005, 70010, 140020, 1043149, 2086298, 4172596, 5215745, 10431490, 20862980]

約数ペア:

[(1, 20862980), (2, 10431490), (4, 5215745), (5, 4172596), (10, 2086298), (20, 1043149), (149, 140020), (298, 70010), (596, 35005), (745, 28004), (1490, 14002), (2980, 7001)]