81245220

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193441}}^1$

素因数の和:193460

約数の個数: 48

約数和(自身を含む): 259986048

約数和(自身を除く): 178740828

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 193441, 386882, 580323, 773764, 967205, 1160646, 1354087, 1934410, 2321292, 2708174, 2901615, 3868820, 4062261, 5416348, 5803230, 6770435, 8124522, 11606460, 13540870, 16249044, 20311305, 27081740, 40622610, 81245220]

約数ペア:

[(1, 81245220), (2, 40622610), (3, 27081740), (4, 20311305), (5, 16249044), (6, 13540870), (7, 11606460), (10, 8124522), (12, 6770435), (14, 5803230), (15, 5416348), (20, 4062261), (21, 3868820), (28, 2901615), (30, 2708174), (35, 2321292), (42, 1934410), (60, 1354087), (70, 1160646), (84, 967205), (105, 773764), (140, 580323), (210, 386882), (420, 193441)]