21897645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18959}}^1$

素因数の和:18985

約数の個数: 32

約数和(自身を含む): 43683840

約数和(自身を除く): 21786195

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 77, 105, 165, 231, 385, 1155, 18959, 56877, 94795, 132713, 208549, 284385, 398139, 625647, 663565, 1042745, 1459843, 1990695, 3128235, 4379529, 7299215, 21897645]

約数ペア:

[(1, 21897645), (3, 7299215), (5, 4379529), (7, 3128235), (11, 1990695), (15, 1459843), (21, 1042745), (33, 663565), (35, 625647), (55, 398139), (77, 284385), (105, 208549), (165, 132713), (231, 94795), (385, 56877), (1155, 18959)]