21719405

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{3187}}^1$

素因数の和:3268

約数の個数: 16

約数和(自身を含む): 27544320

約数和(自身を除く): 5824915

約数列:

[1, 5, 29, 47, 145, 235, 1363, 3187, 6815, 15935, 92423, 149789, 462115, 748945, 4343881, 21719405]

約数ペア:

[(1, 21719405), (5, 4343881), (29, 748945), (47, 462115), (145, 149789), (235, 92423), (1363, 15935), (3187, 6815)]