123213520

素因数分解:

$2^4\times 5^1\times {\mathrm{1540169}}^1$

素因数の和:1540182

約数の個数: 20

約数和(自身を含む): 286471620

約数和(自身を除く): 163258100

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1540169, 3080338, 6160676, 7700845, 12321352, 15401690, 24642704, 30803380, 61606760, 123213520]

約数ペア:

[(1, 123213520), (2, 61606760), (4, 30803380), (5, 24642704), (8, 15401690), (10, 12321352), (16, 7700845), (20, 6160676), (40, 3080338), (80, 1540169)]