20618685

素因数分解:

$3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{937}}^1$

素因数の和:1114

約数の個数: 32

約数和(自身を含む): 36919680

約数和(自身を除く): 16300995

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 163, 489, 815, 937, 1467, 2445, 2811, 4401, 4685, 7335, 8433, 14055, 22005, 25299, 42165, 126495, 152731, 458193, 763655, 1374579, 2290965, 4123737, 6872895, 20618685]

約数ペア:

[(1, 20618685), (3, 6872895), (5, 4123737), (9, 2290965), (15, 1374579), (27, 763655), (45, 458193), (135, 152731), (163, 126495), (489, 42165), (815, 25299), (937, 22005), (1467, 14055), (2445, 8433), (2811, 7335), (4401, 4685)]