21916215

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{25633}}^1$

素因数の和:25663

約数の個数: 24

約数和(自身を含む): 39989040

約数和(自身を除く): 18072825

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 25633, 76899, 128165, 230697, 384495, 487027, 1153485, 1461081, 2435135, 4383243, 7305405, 21916215]

約数ペア:

[(1, 21916215), (3, 7305405), (5, 4383243), (9, 2435135), (15, 1461081), (19, 1153485), (45, 487027), (57, 384495), (95, 230697), (171, 128165), (285, 76899), (855, 25633)]