19789905

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{12809}}^1$

素因数の和:12920

約数の個数: 16

約数和(自身を含む): 31973760

約数和(自身を除く): 12183855

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 12809, 38427, 64045, 192135, 1319327, 3957981, 6596635, 19789905]

約数ペア:

[(1, 19789905), (3, 6596635), (5, 3957981), (15, 1319327), (103, 192135), (309, 64045), (515, 38427), (1545, 12809)]