12398980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{56359}}^1$

素因数の和:56379

約数の個数: 24

約数和(自身を含む): 28405440

約数和(自身を除く): 16006460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 56359, 112718, 225436, 281795, 563590, 619949, 1127180, 1239898, 2479796, 3099745, 6199490, 12398980]

約数ペア:

[(1, 12398980), (2, 6199490), (4, 3099745), (5, 2479796), (10, 1239898), (11, 1127180), (20, 619949), (22, 563590), (44, 281795), (55, 225436), (110, 112718), (220, 56359)]