21292705

素因数分解:

$5^1\times 7^2\times {\mathrm{233}}^1\times {\mathrm{373}}^1$

素因数の和:625

約数の個数: 24

約数和(自身を含む): 29930472

約数和(自身を除く): 8637767

約数列:

[1, 5, 7, 35, 49, 233, 245, 373, 1165, 1631, 1865, 2611, 8155, 11417, 13055, 18277, 57085, 86909, 91385, 434545, 608363, 3041815, 4258541, 21292705]

約数ペア:

[(1, 21292705), (5, 4258541), (7, 3041815), (35, 608363), (49, 434545), (233, 91385), (245, 86909), (373, 57085), (1165, 18277), (1631, 13055), (1865, 11417), (2611, 8155)]