21815709

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{4153}}^1$

素因数の和:4276

約数の個数: 16

約数和(自身を含む): 31105152

約数和(自身を除く): 9289443

約数列:

[1, 3, 17, 51, 103, 309, 1751, 4153, 5253, 12459, 70601, 211803, 427759, 1283277, 7271903, 21815709]

約数ペア:

[(1, 21815709), (3, 7271903), (17, 1283277), (51, 427759), (103, 211803), (309, 70601), (1751, 12459), (4153, 5253)]