21085967

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{4789}}^1$

素因数の和:4850

約数の個数: 16

約数和(自身を含む): 26210880

約数和(自身を除く): 5124913

約数列:

[1, 7, 17, 37, 119, 259, 629, 4403, 4789, 33523, 81413, 177193, 569891, 1240351, 3012281, 21085967]

約数ペア:

[(1, 21085967), (7, 3012281), (17, 1240351), (37, 569891), (119, 177193), (259, 81413), (629, 33523), (4403, 4789)]