21493885

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{11587}}^1$

素因数の和:11652

約数の個数: 16

約数和(自身を含む): 30036096

約数和(自身を除く): 8542211

約数列:

[1, 5, 7, 35, 53, 265, 371, 1855, 11587, 57935, 81109, 405545, 614111, 3070555, 4298777, 21493885]

約数ペア:

[(1, 21493885), (5, 4298777), (7, 3070555), (35, 614111), (53, 405545), (265, 81109), (371, 57935), (1855, 11587)]