179487020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{643}}^1\times {\mathrm{821}}^1$

素因数の和:1490

約数の個数: 48

約数和(自身を含む): 400202208

約数和(自身を除く): 220715188

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 643, 821, 1286, 1642, 2572, 3215, 3284, 4105, 6430, 8210, 10931, 12860, 13957, 16420, 21862, 27914, 43724, 54655, 55828, 69785, 109310, 139570, 218620, 279140, 527903, 1055806, 2111612, 2639515, 5279030, 8974351, 10558060, 17948702, 35897404, 44871755, 89743510, 179487020]

約数ペア:

[(1, 179487020), (2, 89743510), (4, 44871755), (5, 35897404), (10, 17948702), (17, 10558060), (20, 8974351), (34, 5279030), (68, 2639515), (85, 2111612), (170, 1055806), (340, 527903), (643, 279140), (821, 218620), (1286, 139570), (1642, 109310), (2572, 69785), (3215, 55828), (3284, 54655), (4105, 43724), (6430, 27914), (8210, 21862), (10931, 16420), (12860, 13957)]