21656464

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{22189}}^1$

素因数の和:22258

約数の個数: 20

約数和(自身を含む): 42649180

約数和(自身を除く): 20992716

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 22189, 44378, 88756, 177512, 355024, 1353529, 2707058, 5414116, 10828232, 21656464]

約数ペア:

[(1, 21656464), (2, 10828232), (4, 5414116), (8, 2707058), (16, 1353529), (61, 355024), (122, 177512), (244, 88756), (488, 44378), (976, 22189)]