21551404

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18773}}^1$

素因数の和:18825

約数の個数: 24

約数和(自身を含む): 44156448

約数和(自身を除く): 22605044

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18773, 37546, 75092, 131411, 262822, 525644, 769693, 1539386, 3078772, 5387851, 10775702, 21551404]

約数ペア:

[(1, 21551404), (2, 10775702), (4, 5387851), (7, 3078772), (14, 1539386), (28, 769693), (41, 525644), (82, 262822), (164, 131411), (287, 75092), (574, 37546), (1148, 18773)]