81282418

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{257}}^1$

素因数の和:355

約数の個数: 64

約数和(自身を含む): 156038400

約数和(自身を除く): 74755982

約数列:

[1, 2, 7, 14, 19, 29, 38, 41, 58, 82, 133, 203, 257, 266, 287, 406, 514, 551, 574, 779, 1102, 1189, 1558, 1799, 2378, 3598, 3857, 4883, 5453, 7453, 7714, 8323, 9766, 10537, 10906, 14906, 16646, 21074, 22591, 34181, 45182, 52171, 68362, 73759, 104342, 141607, 147518, 158137, 200203, 283214, 305573, 316274, 400406, 611146, 991249, 1401421, 1982498, 2139011, 2802842, 4278022, 5805887, 11611774, 40641209, 81282418]

約数ペア:

[(1, 81282418), (2, 40641209), (7, 11611774), (14, 5805887), (19, 4278022), (29, 2802842), (38, 2139011), (41, 1982498), (58, 1401421), (82, 991249), (133, 611146), (203, 400406), (257, 316274), (266, 305573), (287, 283214), (406, 200203), (514, 158137), (551, 147518), (574, 141607), (779, 104342), (1102, 73759), (1189, 68362), (1558, 52171), (1799, 45182), (2378, 34181), (3598, 22591), (3857, 21074), (4883, 16646), (5453, 14906), (7453, 10906), (7714, 10537), (8323, 9766)]