21280330

素因数分解:

$2^1\times 5^1\times {\mathrm{617}}^1\times {\mathrm{3449}}^1$

素因数の和:4073

約数の個数: 16

約数和(自身を含む): 38377800

約数和(自身を除く): 17097470

約数列:

[1, 2, 5, 10, 617, 1234, 3085, 3449, 6170, 6898, 17245, 34490, 2128033, 4256066, 10640165, 21280330]

約数ペア:

[(1, 21280330), (2, 10640165), (5, 4256066), (10, 2128033), (617, 34490), (1234, 17245), (3085, 6898), (3449, 6170)]