21507903

素因数分解:

$3^3\times {\mathrm{41}}^1\times {\mathrm{19429}}^1$

素因数の和:19479

約数の個数: 16

約数和(自身を含む): 32642400

約数和(自身を除く): 11134497

約数列:

[1, 3, 9, 27, 41, 123, 369, 1107, 19429, 58287, 174861, 524583, 796589, 2389767, 7169301, 21507903]

約数ペア:

[(1, 21507903), (3, 7169301), (9, 2389767), (27, 796589), (41, 524583), (123, 174861), (369, 58287), (1107, 19429)]