20013705

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10343}}^1$

素因数の和:10397

約数の個数: 24

約数和(自身を含む): 35500608

約数和(自身を除く): 15486903

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 10343, 31029, 51715, 93087, 155145, 444749, 465435, 1334247, 2223745, 4002741, 6671235, 20013705]

約数ペア:

[(1, 20013705), (3, 6671235), (5, 4002741), (9, 2223745), (15, 1334247), (43, 465435), (45, 444749), (129, 155145), (215, 93087), (387, 51715), (645, 31029), (1935, 10343)]