19721805

素因数分解:

$3^1\times 5^1\times {\mathrm{883}}^1\times {\mathrm{1489}}^1$

素因数の和:2380

約数の個数: 16

約数和(自身を含む): 31611840

約数和(自身を除く): 11890035

約数列:

[1, 3, 5, 15, 883, 1489, 2649, 4415, 4467, 7445, 13245, 22335, 1314787, 3944361, 6573935, 19721805]

約数ペア:

[(1, 19721805), (3, 6573935), (5, 3944361), (15, 1314787), (883, 22335), (1489, 13245), (2649, 7445), (4415, 4467)]