20989628

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{2551}}^1$

素因数の和:2594

約数の個数: 36

約数和(自身を含む): 42766416

約数和(自身を除く): 21776788

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 121, 187, 242, 374, 484, 748, 2057, 2551, 4114, 5102, 8228, 10204, 28061, 43367, 56122, 86734, 112244, 173468, 308671, 477037, 617342, 954074, 1234684, 1908148, 5247407, 10494814, 20989628]

約数ペア:

[(1, 20989628), (2, 10494814), (4, 5247407), (11, 1908148), (17, 1234684), (22, 954074), (34, 617342), (44, 477037), (68, 308671), (121, 173468), (187, 112244), (242, 86734), (374, 56122), (484, 43367), (748, 28061), (2057, 10204), (2551, 8228), (4114, 5102)]