31399280

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1151}}^1$

素因数の和:1206

約数の個数: 80

約数和(自身を含む): 82280448

約数和(自身を除く): 50881168

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 110, 124, 155, 176, 220, 248, 310, 341, 440, 496, 620, 682, 880, 1151, 1240, 1364, 1705, 2302, 2480, 2728, 3410, 4604, 5456, 5755, 6820, 9208, 11510, 12661, 13640, 18416, 23020, 25322, 27280, 35681, 46040, 50644, 63305, 71362, 92080, 101288, 126610, 142724, 178405, 202576, 253220, 285448, 356810, 392491, 506440, 570896, 713620, 784982, 1012880, 1427240, 1569964, 1962455, 2854480, 3139928, 3924910, 6279856, 7849820, 15699640, 31399280]

約数ペア:

[(1, 31399280), (2, 15699640), (4, 7849820), (5, 6279856), (8, 3924910), (10, 3139928), (11, 2854480), (16, 1962455), (20, 1569964), (22, 1427240), (31, 1012880), (40, 784982), (44, 713620), (55, 570896), (62, 506440), (80, 392491), (88, 356810), (110, 285448), (124, 253220), (155, 202576), (176, 178405), (220, 142724), (248, 126610), (310, 101288), (341, 92080), (440, 71362), (496, 63305), (620, 50644), (682, 46040), (880, 35681), (1151, 27280), (1240, 25322), (1364, 23020), (1705, 18416), (2302, 13640), (2480, 12661), (2728, 11510), (3410, 9208), (4604, 6820), (5456, 5755)]