20136428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:354

約数の個数: 48

約数和(自身を含む): 40572000

約数和(自身を除く): 20435572

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 89, 178, 229, 247, 356, 458, 494, 916, 988, 1157, 1691, 2314, 2977, 3382, 4351, 4628, 5954, 6764, 8702, 11908, 17404, 20381, 21983, 40762, 43966, 56563, 81524, 87932, 113126, 226252, 264953, 387239, 529906, 774478, 1059812, 1548956, 5034107, 10068214, 20136428]

約数ペア:

[(1, 20136428), (2, 10068214), (4, 5034107), (13, 1548956), (19, 1059812), (26, 774478), (38, 529906), (52, 387239), (76, 264953), (89, 226252), (178, 113126), (229, 87932), (247, 81524), (356, 56563), (458, 43966), (494, 40762), (916, 21983), (988, 20381), (1157, 17404), (1691, 11908), (2314, 8702), (2977, 6764), (3382, 5954), (4351, 4628)]