20855408

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{6421}}^1$

素因数の和:6465

約数の個数: 40

約数和(自身を含む): 47779680

約数和(自身を除く): 26924272

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 56, 58, 112, 116, 203, 232, 406, 464, 812, 1624, 3248, 6421, 12842, 25684, 44947, 51368, 89894, 102736, 179788, 186209, 359576, 372418, 719152, 744836, 1303463, 1489672, 2606926, 2979344, 5213852, 10427704, 20855408]

約数ペア:

[(1, 20855408), (2, 10427704), (4, 5213852), (7, 2979344), (8, 2606926), (14, 1489672), (16, 1303463), (28, 744836), (29, 719152), (56, 372418), (58, 359576), (112, 186209), (116, 179788), (203, 102736), (232, 89894), (406, 51368), (464, 44947), (812, 25684), (1624, 12842), (3248, 6421)]