20724321

素因数分解:

$3^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{1427}}^1$

素因数の和:1580

約数の個数: 16

約数和(自身を含む): 28514304

約数和(自身を除く): 7789983

約数列:

[1, 3, 47, 103, 141, 309, 1427, 4281, 4841, 14523, 67069, 146981, 201207, 440943, 6908107, 20724321]

約数ペア:

[(1, 20724321), (3, 6908107), (47, 440943), (103, 201207), (141, 146981), (309, 67069), (1427, 14523), (4281, 4841)]