18260487

素因数分解:

$3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{881}}^1$

素因数の和:948

約数の個数: 36

約数和(自身を含む): 31370976

約数和(自身を除く): 13110489

約数列:

[1, 3, 7, 9, 21, 47, 49, 63, 141, 147, 329, 423, 441, 881, 987, 2303, 2643, 2961, 6167, 6909, 7929, 18501, 20727, 41407, 43169, 55503, 124221, 129507, 289849, 372663, 388521, 869547, 2028943, 2608641, 6086829, 18260487]

約数ペア:

[(1, 18260487), (3, 6086829), (7, 2608641), (9, 2028943), (21, 869547), (47, 388521), (49, 372663), (63, 289849), (141, 129507), (147, 124221), (329, 55503), (423, 43169), (441, 41407), (881, 20727), (987, 18501), (2303, 7929), (2643, 6909), (2961, 6167)]