21986195

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{57107}}^1$

素因数の和:57130

約数の個数: 16

約数和(自身を含む): 32894208

約数和(自身を除く): 10908013

約数列:

[1, 5, 7, 11, 35, 55, 77, 385, 57107, 285535, 399749, 628177, 1998745, 3140885, 4397239, 21986195]

約数ペア:

[(1, 21986195), (5, 4397239), (7, 3140885), (11, 1998745), (35, 628177), (55, 399749), (77, 285535), (385, 57107)]