18223996

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 37739520

約数和(自身を除く): 19515524

約数列:

[1, 2, 4, 7, 14, 28, 71, 89, 103, 142, 178, 206, 284, 356, 412, 497, 623, 721, 994, 1246, 1442, 1988, 2492, 2884, 6319, 7313, 9167, 12638, 14626, 18334, 25276, 29252, 36668, 44233, 51191, 64169, 88466, 102382, 128338, 176932, 204764, 256676, 650857, 1301714, 2603428, 4555999, 9111998, 18223996]

約数ペア:

[(1, 18223996), (2, 9111998), (4, 4555999), (7, 2603428), (14, 1301714), (28, 650857), (71, 256676), (89, 204764), (103, 176932), (142, 128338), (178, 102382), (206, 88466), (284, 64169), (356, 51191), (412, 44233), (497, 36668), (623, 29252), (721, 25276), (994, 18334), (1246, 14626), (1442, 12638), (1988, 9167), (2492, 7313), (2884, 6319)]