21639579

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{5387}}^1$

素因数の和:5506

約数の個数: 16

約数和(自身を含む): 31379712

約数和(自身を除く): 9740133

約数列:

[1, 3, 13, 39, 103, 309, 1339, 4017, 5387, 16161, 70031, 210093, 554861, 1664583, 7213193, 21639579]

約数ペア:

[(1, 21639579), (3, 7213193), (13, 1664583), (39, 554861), (103, 210093), (309, 70031), (1339, 16161), (4017, 5387)]