20216663620

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{2520781}}^1$

素因数の和:2521191

約数の個数: 24

約数和(自身を含む): 42560883288

約数和(自身を除く): 22344219668

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 2520781, 5041562, 10083124, 12603905, 25207810, 50415620, 1010833181, 2021666362, 4043332724, 5054165905, 10108331810, 20216663620]

約数ペア:

[(1, 20216663620), (2, 10108331810), (4, 5054165905), (5, 4043332724), (10, 2021666362), (20, 1010833181), (401, 50415620), (802, 25207810), (1604, 12603905), (2005, 10083124), (4010, 5041562), (8020, 2520781)]