20405872

素因数分解:

$2^4\times {\mathrm{1013}}^1\times {\mathrm{1259}}^1$

素因数の和:2280

約数の個数: 20

約数和(自身を含む): 39606840

約数和(自身を除く): 19200968

約数列:

[1, 2, 4, 8, 16, 1013, 1259, 2026, 2518, 4052, 5036, 8104, 10072, 16208, 20144, 1275367, 2550734, 5101468, 10202936, 20405872]

約数ペア:

[(1, 20405872), (2, 10202936), (4, 5101468), (8, 2550734), (16, 1275367), (1013, 20144), (1259, 16208), (2026, 10072), (2518, 8104), (4052, 5036)]