81940505

素因数分解:

$5^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{4201}}^1$

素因数の和:4336

約数の個数: 16

約数和(自身を含む): 101654784

約数和(自身を除く): 19714279

約数列:

[1, 5, 47, 83, 235, 415, 3901, 4201, 19505, 21005, 197447, 348683, 987235, 1743415, 16388101, 81940505]

約数ペア:

[(1, 81940505), (5, 16388101), (47, 1743415), (83, 987235), (235, 348683), (415, 197447), (3901, 21005), (4201, 19505)]