21666992

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{263}}^1\times {\mathrm{271}}^1$

素因数の和:561

約数の個数: 40

約数和(自身を含む): 44520960

約数和(自身を除く): 22853968

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 263, 271, 304, 526, 542, 1052, 1084, 2104, 2168, 4208, 4336, 4997, 5149, 9994, 10298, 19988, 20596, 39976, 41192, 71273, 79952, 82384, 142546, 285092, 570184, 1140368, 1354187, 2708374, 5416748, 10833496, 21666992]

約数ペア:

[(1, 21666992), (2, 10833496), (4, 5416748), (8, 2708374), (16, 1354187), (19, 1140368), (38, 570184), (76, 285092), (152, 142546), (263, 82384), (271, 79952), (304, 71273), (526, 41192), (542, 39976), (1052, 20596), (1084, 19988), (2104, 10298), (2168, 9994), (4208, 5149), (4336, 4997)]