21257065

素因数分解:

$5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1069}}^1$

素因数の和:1212

約数の個数: 16

約数和(自身を含む): 26424720

約数和(自身を除く): 5167655

約数列:

[1, 5, 41, 97, 205, 485, 1069, 3977, 5345, 19885, 43829, 103693, 219145, 518465, 4251413, 21257065]

約数ペア:

[(1, 21257065), (5, 4251413), (41, 518465), (97, 219145), (205, 103693), (485, 43829), (1069, 19885), (3977, 5345)]