21619580

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{63587}}^1$

素因数の和:63613

約数の個数: 24

約数和(自身を含む): 48072528

約数和(自身を除く): 26452948

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 63587, 127174, 254348, 317935, 635870, 1080979, 1271740, 2161958, 4323916, 5404895, 10809790, 21619580]

約数ペア:

[(1, 21619580), (2, 10809790), (4, 5404895), (5, 4323916), (10, 2161958), (17, 1271740), (20, 1080979), (34, 635870), (68, 317935), (85, 254348), (170, 127174), (340, 63587)]