19904545

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{2371}}^1$

素因数の和:2472

約数の個数: 16

約数和(自身を含む): 25276032

約数和(自身を除く): 5371487

約数列:

[1, 5, 23, 73, 115, 365, 1679, 2371, 8395, 11855, 54533, 173083, 272665, 865415, 3980909, 19904545]

約数ペア:

[(1, 19904545), (5, 3980909), (23, 865415), (73, 272665), (115, 173083), (365, 54533), (1679, 11855), (2371, 8395)]