20767816

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{42557}}^1$

素因数の和:42624

約数の個数: 16

約数和(自身を含む): 39578940

約数和(自身を除く): 18811124

約数列:

[1, 2, 4, 8, 61, 122, 244, 488, 42557, 85114, 170228, 340456, 2595977, 5191954, 10383908, 20767816]

約数ペア:

[(1, 20767816), (2, 10383908), (4, 5191954), (8, 2595977), (61, 340456), (122, 170228), (244, 85114), (488, 42557)]