21354207

素因数分解:

$3^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{3671}}^1$

素因数の和:3958

約数の個数: 16

約数和(自身を含む): 32666112

約数和(自身を除く): 11311905

約数列:

[1, 3, 7, 21, 277, 831, 1939, 3671, 5817, 11013, 25697, 77091, 1016867, 3050601, 7118069, 21354207]

約数ペア:

[(1, 21354207), (3, 7118069), (7, 3050601), (21, 1016867), (277, 77091), (831, 25697), (1939, 11013), (3671, 5817)]