20659725

素因数分解:

$3^3\times 5^2\times {\mathrm{127}}^1\times {\mathrm{241}}^1$

素因数の和:387

約数の個数: 48

約数和(自身を含む): 38410240

約数和(自身を除く): 17750515

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 127, 135, 225, 241, 381, 635, 675, 723, 1143, 1205, 1905, 2169, 3175, 3429, 3615, 5715, 6025, 6507, 9525, 10845, 17145, 18075, 28575, 30607, 32535, 54225, 85725, 91821, 153035, 162675, 275463, 459105, 765175, 826389, 1377315, 2295525, 4131945, 6886575, 20659725]

約数ペア:

[(1, 20659725), (3, 6886575), (5, 4131945), (9, 2295525), (15, 1377315), (25, 826389), (27, 765175), (45, 459105), (75, 275463), (127, 162675), (135, 153035), (225, 91821), (241, 85725), (381, 54225), (635, 32535), (675, 30607), (723, 28575), (1143, 18075), (1205, 17145), (1905, 10845), (2169, 9525), (3175, 6507), (3429, 6025), (3615, 5715)]