18671737

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 23961600

約数和(自身を除く): 5289863

約数列:

[1, 7, 19, 29, 47, 103, 133, 203, 329, 551, 721, 893, 1363, 1957, 2987, 3857, 4841, 6251, 9541, 13699, 20909, 25897, 33887, 56753, 91979, 140389, 181279, 397271, 643853, 982723, 2667391, 18671737]

約数ペア:

[(1, 18671737), (7, 2667391), (19, 982723), (29, 643853), (47, 397271), (103, 181279), (133, 140389), (203, 91979), (329, 56753), (551, 33887), (721, 25897), (893, 20909), (1363, 13699), (1957, 9541), (2987, 6251), (3857, 4841)]