157221981

素因数分解:

$3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{24229}}^1$

素因数の和:24345

約数の個数: 24

約数和(自身を含む): 262071680

約数和(自身を除く): 104849699

約数列:

[1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 6489, 24229, 72687, 169603, 218061, 508809, 1526427, 2495587, 7486761, 17469109, 22460283, 52407327, 157221981]

約数ペア:

[(1, 157221981), (3, 52407327), (7, 22460283), (9, 17469109), (21, 7486761), (63, 2495587), (103, 1526427), (309, 508809), (721, 218061), (927, 169603), (2163, 72687), (6489, 24229)]