18400581

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{163}}^1$

素因数の和:322

約数の個数: 32

約数和(自身を含む): 28417920

約数和(自身を除く): 10017339

約数列:

[1, 3, 9, 27, 37, 111, 113, 163, 333, 339, 489, 999, 1017, 1467, 3051, 4181, 4401, 6031, 12543, 18093, 18419, 37629, 54279, 55257, 112887, 162837, 165771, 497313, 681503, 2044509, 6133527, 18400581]

約数ペア:

[(1, 18400581), (3, 6133527), (9, 2044509), (27, 681503), (37, 497313), (111, 165771), (113, 162837), (163, 112887), (333, 55257), (339, 54279), (489, 37629), (999, 18419), (1017, 18093), (1467, 12543), (3051, 6031), (4181, 4401)]