20449040

素因数分解:

$2^4\times 5^1\times {\mathrm{255613}}^1$

素因数の和:255626

約数の個数: 20

約数和(自身を含む): 47544204

約数和(自身を除く): 27095164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 255613, 511226, 1022452, 1278065, 2044904, 2556130, 4089808, 5112260, 10224520, 20449040]

約数ペア:

[(1, 20449040), (2, 10224520), (4, 5112260), (5, 4089808), (8, 2556130), (10, 2044904), (16, 1278065), (20, 1022452), (40, 511226), (80, 255613)]