20199220

素因数分解:

$2^2\times 5^1\times {\mathrm{997}}^1\times {\mathrm{1013}}^1$

素因数の和:2019

約数の個数: 24

約数和(自身を含む): 42502824

約数和(自身を除く): 22303604

約数列:

[1, 2, 4, 5, 10, 20, 997, 1013, 1994, 2026, 3988, 4052, 4985, 5065, 9970, 10130, 19940, 20260, 1009961, 2019922, 4039844, 5049805, 10099610, 20199220]

約数ペア:

[(1, 20199220), (2, 10099610), (4, 5049805), (5, 4039844), (10, 2019922), (20, 1009961), (997, 20260), (1013, 19940), (1994, 10130), (2026, 9970), (3988, 5065), (4052, 4985)]