21350205

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{24971}}^1$

素因数の和:25001

約数の個数: 24

約数和(自身を含む): 38956320

約数和(自身を除く): 17606115

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 24971, 74913, 124855, 224739, 374565, 474449, 1123695, 1423347, 2372245, 4270041, 7116735, 21350205]

約数ペア:

[(1, 21350205), (3, 7116735), (5, 4270041), (9, 2372245), (15, 1423347), (19, 1123695), (45, 474449), (57, 374565), (95, 224739), (171, 124855), (285, 74913), (855, 24971)]