20137509

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{163}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 34998912

約数和(自身を除く): 14861403

約数列:

[1, 3, 7, 9, 21, 37, 53, 63, 111, 159, 163, 259, 333, 371, 477, 489, 777, 1113, 1141, 1467, 1961, 2331, 3339, 3423, 5883, 6031, 8639, 10269, 13727, 17649, 18093, 25917, 41181, 42217, 54279, 60473, 77751, 123543, 126651, 181419, 319643, 379953, 544257, 958929, 2237501, 2876787, 6712503, 20137509]

約数ペア:

[(1, 20137509), (3, 6712503), (7, 2876787), (9, 2237501), (21, 958929), (37, 544257), (53, 379953), (63, 319643), (111, 181419), (159, 126651), (163, 123543), (259, 77751), (333, 60473), (371, 54279), (477, 42217), (489, 41181), (777, 25917), (1113, 18093), (1141, 17649), (1467, 13727), (1961, 10269), (2331, 8639), (3339, 6031), (3423, 5883)]