217414309

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^2\times {\mathrm{491}}^1$

素因数の和:637

約数の個数: 24

約数和(自身を含む): 268017984

約数和(自身を除く): 50603675

約数列:

[1, 7, 17, 61, 119, 427, 491, 1037, 3437, 3721, 7259, 8347, 26047, 29951, 58429, 63257, 209657, 442799, 509167, 1827011, 3564169, 12789077, 31059187, 217414309]

約数ペア:

[(1, 217414309), (7, 31059187), (17, 12789077), (61, 3564169), (119, 1827011), (427, 509167), (491, 442799), (1037, 209657), (3437, 63257), (3721, 58429), (7259, 29951), (8347, 26047)]