19927885

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{1549}}^1$

素因数の和:1668

約数の個数: 16

約数和(自身を含む): 24998400

約数和(自身を除く): 5070515

約数列:

[1, 5, 31, 83, 155, 415, 1549, 2573, 7745, 12865, 48019, 128567, 240095, 642835, 3985577, 19927885]

約数ペア:

[(1, 19927885), (5, 3985577), (31, 642835), (83, 240095), (155, 128567), (415, 48019), (1549, 12865), (2573, 7745)]