18718427

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 24554880

約数和(自身を除く): 5836453

約数列:

[1, 7, 13, 29, 41, 91, 173, 203, 287, 377, 533, 1189, 1211, 2249, 2639, 3731, 5017, 7093, 8323, 15457, 15743, 35119, 49651, 65221, 92209, 108199, 205697, 456547, 645463, 1439879, 2674061, 18718427]

約数ペア:

[(1, 18718427), (7, 2674061), (13, 1439879), (29, 645463), (41, 456547), (91, 205697), (173, 108199), (203, 92209), (287, 65221), (377, 49651), (533, 35119), (1189, 15743), (1211, 15457), (2249, 8323), (2639, 7093), (3731, 5017)]