19720245

素因数分解:

$3^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{3767}}^1$

素因数の和:4124

約数の個数: 16

約数和(自身を含む): 31651200

約数和(自身を除く): 11930955

約数列:

[1, 3, 5, 15, 349, 1047, 1745, 3767, 5235, 11301, 18835, 56505, 1314683, 3944049, 6573415, 19720245]

約数ペア:

[(1, 19720245), (3, 6573415), (5, 3944049), (15, 1314683), (349, 56505), (1047, 18835), (1745, 11301), (3767, 5235)]