21738556

素因数分解:

$2^2\times 7^2\times {\mathrm{197}}^1\times {\mathrm{563}}^1$

素因数の和:778

約数の個数: 36

約数和(自身を含む): 44557128

約数和(自身を除く): 22818572

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 197, 394, 563, 788, 1126, 1379, 2252, 2758, 3941, 5516, 7882, 9653, 15764, 19306, 27587, 38612, 55174, 110348, 110911, 221822, 443644, 776377, 1552754, 3105508, 5434639, 10869278, 21738556]

約数ペア:

[(1, 21738556), (2, 10869278), (4, 5434639), (7, 3105508), (14, 1552754), (28, 776377), (49, 443644), (98, 221822), (196, 110911), (197, 110348), (394, 55174), (563, 38612), (788, 27587), (1126, 19306), (1379, 15764), (2252, 9653), (2758, 7882), (3941, 5516)]