19913505

素因数分解:

$3^1\times 5^1\times {\mathrm{103}}^1\times {\mathrm{12889}}^1$

素因数の和:13000

約数の個数: 16

約数和(自身を含む): 32173440

約数和(自身を除く): 12259935

約数列:

[1, 3, 5, 15, 103, 309, 515, 1545, 12889, 38667, 64445, 193335, 1327567, 3982701, 6637835, 19913505]

約数ペア:

[(1, 19913505), (3, 6637835), (5, 3982701), (15, 1327567), (103, 193335), (309, 64445), (515, 38667), (1545, 12889)]