21790412

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9851}}^1$

素因数の和:9941

約数の個数: 24

約数和(自身を含む): 44136960

約数和(自身を除く): 22346548

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9851, 19702, 39404, 68957, 137914, 275828, 778229, 1556458, 3112916, 5447603, 10895206, 21790412]

約数ペア:

[(1, 21790412), (2, 10895206), (4, 5447603), (7, 3112916), (14, 1556458), (28, 778229), (79, 275828), (158, 137914), (316, 68957), (553, 39404), (1106, 19702), (2212, 9851)]