20001965

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{677}}^1$

素因数の和:1012

約数の個数: 16

約数和(自身を含む): 25384320

約数和(自身を除く): 5382355

約数列:

[1, 5, 19, 95, 311, 677, 1555, 3385, 5909, 12863, 29545, 64315, 210547, 1052735, 4000393, 20001965]

約数ペア:

[(1, 20001965), (5, 4000393), (19, 1052735), (95, 210547), (311, 64315), (677, 29545), (1555, 12863), (3385, 5909)]