21023715

素因数分解:

$3^1\times 5^1\times {\mathrm{1061}}^1\times {\mathrm{1321}}^1$

素因数の和:2390

約数の個数: 16

約数和(自身を含む): 33695136

約数和(自身を除く): 12671421

約数列:

[1, 3, 5, 15, 1061, 1321, 3183, 3963, 5305, 6605, 15915, 19815, 1401581, 4204743, 7007905, 21023715]

約数ペア:

[(1, 21023715), (3, 7007905), (5, 4204743), (15, 1401581), (1061, 19815), (1321, 15915), (3183, 6605), (3963, 5305)]