21244990

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^3\times {\mathrm{967}}^1$

素因数の和:1013

約数の個数: 32

約数和(自身を含む): 41469120

約数和(自身を除く): 20224130

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 338, 845, 967, 1690, 1934, 2197, 4394, 4835, 9670, 10985, 12571, 21970, 25142, 62855, 125710, 163423, 326846, 817115, 1634230, 2124499, 4248998, 10622495, 21244990]

約数ペア:

[(1, 21244990), (2, 10622495), (5, 4248998), (10, 2124499), (13, 1634230), (26, 817115), (65, 326846), (130, 163423), (169, 125710), (338, 62855), (845, 25142), (967, 21970), (1690, 12571), (1934, 10985), (2197, 9670), (4394, 4835)]