256807620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1721}}^1$

素因数の和:2565

約数の個数: 72

約数和(自身を含む): 780375960

約数和(自身を除く): 523568340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 829, 1658, 1721, 2487, 3316, 3442, 4145, 4974, 5163, 6884, 7461, 8290, 8605, 9948, 10326, 12435, 14922, 15489, 16580, 17210, 20652, 24870, 25815, 29844, 30978, 34420, 37305, 49740, 51630, 61956, 74610, 77445, 103260, 149220, 154890, 309780, 1426709, 2853418, 4280127, 5706836, 7133545, 8560254, 12840381, 14267090, 17120508, 21400635, 25680762, 28534180, 42801270, 51361524, 64201905, 85602540, 128403810, 256807620]

約数ペア:

[(1, 256807620), (2, 128403810), (3, 85602540), (4, 64201905), (5, 51361524), (6, 42801270), (9, 28534180), (10, 25680762), (12, 21400635), (15, 17120508), (18, 14267090), (20, 12840381), (30, 8560254), (36, 7133545), (45, 5706836), (60, 4280127), (90, 2853418), (180, 1426709), (829, 309780), (1658, 154890), (1721, 149220), (2487, 103260), (3316, 77445), (3442, 74610), (4145, 61956), (4974, 51630), (5163, 49740), (6884, 37305), (7461, 34420), (8290, 30978), (8605, 29844), (9948, 25815), (10326, 24870), (12435, 20652), (14922, 17210), (15489, 16580)]