21547415

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{4783}}^1$

素因数の和:4858

約数の個数: 16

約数和(自身を含む): 27900288

約数和(自身を除く): 6352873

約数列:

[1, 5, 17, 53, 85, 265, 901, 4505, 4783, 23915, 81311, 253499, 406555, 1267495, 4309483, 21547415]

約数ペア:

[(1, 21547415), (5, 4309483), (17, 1267495), (53, 406555), (85, 253499), (265, 81311), (901, 23915), (4505, 4783)]