20215590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{15671}}^1$

素因数の和:15724

約数の個数: 32

約数和(自身を含む): 49648896

約数和(自身を除く): 29433306

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290, 15671, 31342, 47013, 78355, 94026, 156710, 235065, 470130, 673853, 1347706, 2021559, 3369265, 4043118, 6738530, 10107795, 20215590]

約数ペア:

[(1, 20215590), (2, 10107795), (3, 6738530), (5, 4043118), (6, 3369265), (10, 2021559), (15, 1347706), (30, 673853), (43, 470130), (86, 235065), (129, 156710), (215, 94026), (258, 78355), (430, 47013), (645, 31342), (1290, 15671)]