20172793389

素因数分解:

$3^1\times 7^2\times {\mathrm{103}}^1\times {\mathrm{1332329}}^1$

素因数の和:1332449

約数の個数: 24

約数和(自身を含む): 31592208960

約数和(自身を除く): 11419415571

約数列:

[1, 3, 7, 21, 49, 103, 147, 309, 721, 2163, 5047, 15141, 1332329, 3996987, 9326303, 27978909, 65284121, 137229887, 195852363, 411689661, 960609209, 2881827627, 6724264463, 20172793389]

約数ペア:

[(1, 20172793389), (3, 6724264463), (7, 2881827627), (21, 960609209), (49, 411689661), (103, 195852363), (147, 137229887), (309, 65284121), (721, 27978909), (2163, 9326303), (5047, 3996987), (15141, 1332329)]