20681668

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{19963}}^1$

素因数の和:20011

約数の個数: 24

約数和(自身を含む): 42483392

約数和(自身を除く): 21801724

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 19963, 39926, 79852, 139741, 279482, 558964, 738631, 1477262, 2954524, 5170417, 10340834, 20681668]

約数ペア:

[(1, 20681668), (2, 10340834), (4, 5170417), (7, 2954524), (14, 1477262), (28, 738631), (37, 558964), (74, 279482), (148, 139741), (259, 79852), (518, 39926), (1036, 19963)]