20391413

素因数分解:

$7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{461}}^1$

素因数の和:628

約数の個数: 16

約数和(自身を含む): 23950080

約数和(自身を除く): 3558667

約数列:

[1, 7, 71, 89, 461, 497, 623, 3227, 6319, 32731, 41029, 44233, 229117, 287203, 2913059, 20391413]

約数ペア:

[(1, 20391413), (7, 2913059), (71, 287203), (89, 229117), (461, 44233), (497, 41029), (623, 32731), (3227, 6319)]