19988860

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13691}}^1$

素因数の和:13773

約数の個数: 24

約数和(自身を含む): 42554736

約数和(自身を除く): 22565876

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 13691, 27382, 54764, 68455, 136910, 273820, 999443, 1998886, 3997772, 4997215, 9994430, 19988860]

約数ペア:

[(1, 19988860), (2, 9994430), (4, 4997215), (5, 3997772), (10, 1998886), (20, 999443), (73, 273820), (146, 136910), (292, 68455), (365, 54764), (730, 27382), (1460, 13691)]