781740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 2450448

約数和(自身を除く): 1668708

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 101, 129, 172, 180, 202, 215, 258, 303, 387, 404, 430, 505, 516, 606, 645, 774, 860, 909, 1010, 1212, 1290, 1515, 1548, 1818, 1935, 2020, 2580, 3030, 3636, 3870, 4343, 4545, 6060, 7740, 8686, 9090, 13029, 17372, 18180, 21715, 26058, 39087, 43430, 52116, 65145, 78174, 86860, 130290, 156348, 195435, 260580, 390870, 781740]

約数ペア:

[(1, 781740), (2, 390870), (3, 260580), (4, 195435), (5, 156348), (6, 130290), (9, 86860), (10, 78174), (12, 65145), (15, 52116), (18, 43430), (20, 39087), (30, 26058), (36, 21715), (43, 18180), (45, 17372), (60, 13029), (86, 9090), (90, 8686), (101, 7740), (129, 6060), (172, 4545), (180, 4343), (202, 3870), (215, 3636), (258, 3030), (303, 2580), (387, 2020), (404, 1935), (430, 1818), (505, 1548), (516, 1515), (606, 1290), (645, 1212), (774, 1010), (860, 909)]