20265880

素因数分解:

$2^3\times 5^1\times {\mathrm{506647}}^1$

素因数の和:506658

約数の個数: 16

約数和(自身を含む): 45598320

約数和(自身を除く): 25332440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 506647, 1013294, 2026588, 2533235, 4053176, 5066470, 10132940, 20265880]

約数ペア:

[(1, 20265880), (2, 10132940), (4, 5066470), (5, 4053176), (8, 2533235), (10, 2026588), (20, 1013294), (40, 506647)]