20571656

素因数分解:

$2^3\times 7^1\times {\mathrm{211}}^1\times {\mathrm{1741}}^1$

素因数の和:1965

約数の個数: 32

約数和(自身を含む): 44316480

約数和(自身を除く): 23744824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 211, 422, 844, 1477, 1688, 1741, 2954, 3482, 5908, 6964, 11816, 12187, 13928, 24374, 48748, 97496, 367351, 734702, 1469404, 2571457, 2938808, 5142914, 10285828, 20571656]

約数ペア:

[(1, 20571656), (2, 10285828), (4, 5142914), (7, 2938808), (8, 2571457), (14, 1469404), (28, 734702), (56, 367351), (211, 97496), (422, 48748), (844, 24374), (1477, 13928), (1688, 12187), (1741, 11816), (2954, 6964), (3482, 5908)]