21519547

素因数分解:

$7^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{773}}^1$

素因数の和:918

約数の個数: 16

約数和(自身を含む): 25486272

約数和(自身を除く): 3966725

約数列:

[1, 7, 41, 97, 287, 679, 773, 3977, 5411, 27839, 31693, 74981, 221851, 524867, 3074221, 21519547]

約数ペア:

[(1, 21519547), (7, 3074221), (41, 524867), (97, 221851), (287, 74981), (679, 31693), (773, 27839), (3977, 5411)]