20855656

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{42737}}^1$

素因数の和:42804

約数の個数: 16

約数和(自身を含む): 39746340

約数和(自身を除く): 18890684

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 42737, 85474, 170948, 341896, 2606957, 5213914, 10427828, 20855656]

約数ペア:

[(1, 20855656), (2, 10427828), (4, 5213914), (8, 2606957), (61, 341896), (122, 170948), (244, 85474), (488, 42737)]