20217352

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{2437}}^1$

素因数の和:2521

約数の個数: 32

約数和(自身を含む): 40812120

約数和(自身を除く): 20594768

約数列:

[1, 2, 4, 8, 17, 34, 61, 68, 122, 136, 244, 488, 1037, 2074, 2437, 4148, 4874, 8296, 9748, 19496, 41429, 82858, 148657, 165716, 297314, 331432, 594628, 1189256, 2527169, 5054338, 10108676, 20217352]

約数ペア:

[(1, 20217352), (2, 10108676), (4, 5054338), (8, 2527169), (17, 1189256), (34, 594628), (61, 331432), (68, 297314), (122, 165716), (136, 148657), (244, 82858), (488, 41429), (1037, 19496), (2074, 9748), (2437, 8296), (4148, 4874)]