21537404

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20789}}^1$

素因数の和:20837

約数の個数: 24

約数和(自身を含む): 44241120

約数和(自身を除く): 22703716

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20789, 41578, 83156, 145523, 291046, 582092, 769193, 1538386, 3076772, 5384351, 10768702, 21537404]

約数ペア:

[(1, 21537404), (2, 10768702), (4, 5384351), (7, 3076772), (14, 1538386), (28, 769193), (37, 582092), (74, 291046), (148, 145523), (259, 83156), (518, 41578), (1036, 20789)]