19016721

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{163}}^1$

素因数の和:350

約数の個数: 32

約数和(自身を含む): 29520000

約数和(自身を除く): 10503279

約数列:

[1, 3, 9, 27, 29, 87, 149, 163, 261, 447, 489, 783, 1341, 1467, 4023, 4321, 4401, 4727, 12963, 14181, 24287, 38889, 42543, 72861, 116667, 127629, 218583, 655749, 704323, 2112969, 6338907, 19016721]

約数ペア:

[(1, 19016721), (3, 6338907), (9, 2112969), (27, 704323), (29, 655749), (87, 218583), (149, 127629), (163, 116667), (261, 72861), (447, 42543), (489, 38889), (783, 24287), (1341, 14181), (1467, 12963), (4023, 4727), (4321, 4401)]