21066695

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:371

約数の個数: 24

約数和(自身を含む): 27748656

約数和(自身を除く): 6681961

約数列:

[1, 5, 13, 65, 107, 169, 233, 535, 845, 1165, 1391, 3029, 6955, 15145, 18083, 24931, 39377, 90415, 124655, 196885, 324103, 1620515, 4213339, 21066695]

約数ペア:

[(1, 21066695), (5, 4213339), (13, 1620515), (65, 324103), (107, 196885), (169, 124655), (233, 90415), (535, 39377), (845, 24931), (1165, 18083), (1391, 15145), (3029, 6955)]