21900915

素因数分解:

$3^3\times 5^1\times {\mathrm{162229}}^1$

素因数の和:162243

約数の個数: 16

約数和(自身を含む): 38935200

約数和(自身を除く): 17034285

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 162229, 486687, 811145, 1460061, 2433435, 4380183, 7300305, 21900915]

約数ペア:

[(1, 21900915), (3, 7300305), (5, 4380183), (9, 2433435), (15, 1460061), (27, 811145), (45, 486687), (135, 162229)]