21641765

素因数分解:

$5^1\times {\mathrm{17}}^3\times {\mathrm{881}}^1$

素因数の和:937

約数の個数: 16

約数和(自身を含む): 27624240

約数和(自身を除く): 5982475

約数列:

[1, 5, 17, 85, 289, 881, 1445, 4405, 4913, 14977, 24565, 74885, 254609, 1273045, 4328353, 21641765]

約数ペア:

[(1, 21641765), (5, 4328353), (17, 1273045), (85, 254609), (289, 74885), (881, 24565), (1445, 14977), (4405, 4913)]