2019978777620

素因数分解:

$2^2\times 5^1\times {\mathrm{20011}}^1\times {\mathrm{5047171}}^1$

素因数の和:5067191

約数の個数: 24

約数和(自身を含む): 4242168254688

約数和(自身を除く): 2222189477068

約数列:

[1, 2, 4, 5, 10, 20, 20011, 40022, 80044, 100055, 200110, 400220, 5047171, 10094342, 20188684, 25235855, 50471710, 100943420, 100998938881, 201997877762, 403995755524, 504994694405, 1009989388810, 2019978777620]

約数ペア:

[(1, 2019978777620), (2, 1009989388810), (4, 504994694405), (5, 403995755524), (10, 201997877762), (20, 100998938881), (20011, 100943420), (40022, 50471710), (80044, 25235855), (100055, 20188684), (200110, 10094342), (400220, 5047171)]