19794020

素因数分解:

$2^2\times 5^1\times {\mathrm{977}}^1\times {\mathrm{1013}}^1$

素因数の和:1999

約数の個数: 24

約数和(自身を含む): 41651064

約数和(自身を除く): 21857044

約数列:

[1, 2, 4, 5, 10, 20, 977, 1013, 1954, 2026, 3908, 4052, 4885, 5065, 9770, 10130, 19540, 20260, 989701, 1979402, 3958804, 4948505, 9897010, 19794020]

約数ペア:

[(1, 19794020), (2, 9897010), (4, 4948505), (5, 3958804), (10, 1979402), (20, 989701), (977, 20260), (1013, 19540), (1954, 10130), (2026, 9770), (3908, 5065), (4052, 4885)]