21003575

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{11833}}^1$

素因数の和:11914

約数の個数: 12

約数和(自身を含む): 26413488

約数和(自身を除く): 5409913

約数列:

[1, 5, 25, 71, 355, 1775, 11833, 59165, 295825, 840143, 4200715, 21003575]

約数ペア:

[(1, 21003575), (5, 4200715), (25, 840143), (71, 295825), (355, 59165), (1775, 11833)]