18440545

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{389}}^1\times {\mathrm{499}}^1$

素因数の和:912

約数の個数: 16

約数和(自身を含む): 23400000

約数和(自身を除く): 4959455

約数列:

[1, 5, 19, 95, 389, 499, 1945, 2495, 7391, 9481, 36955, 47405, 194111, 970555, 3688109, 18440545]

約数ペア:

[(1, 18440545), (5, 3688109), (19, 970555), (95, 194111), (389, 47405), (499, 36955), (1945, 9481), (2495, 7391)]