21130857

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{461}}^1\times {\mathrm{463}}^1$

素因数の和:941

約数の個数: 24

約数和(自身を含む): 33441408

約数和(自身を除く): 12310551

約数列:

[1, 3, 9, 11, 33, 99, 461, 463, 1383, 1389, 4149, 4167, 5071, 5093, 15213, 15279, 45639, 45837, 213443, 640329, 1920987, 2347873, 7043619, 21130857]

約数ペア:

[(1, 21130857), (3, 7043619), (9, 2347873), (11, 1920987), (33, 640329), (99, 213443), (461, 45837), (463, 45639), (1383, 15279), (1389, 15213), (4149, 5093), (4167, 5071)]