20740935

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{499}}^1$

素因数の和:687

約数の個数: 32

約数和(自身を含む): 35424000

約数和(自身を除く): 14683065

約数列:

[1, 3, 5, 15, 17, 51, 85, 163, 255, 489, 499, 815, 1497, 2445, 2495, 2771, 7485, 8313, 8483, 13855, 25449, 41565, 42415, 81337, 127245, 244011, 406685, 1220055, 1382729, 4148187, 6913645, 20740935]

約数ペア:

[(1, 20740935), (3, 6913645), (5, 4148187), (15, 1382729), (17, 1220055), (51, 406685), (85, 244011), (163, 127245), (255, 81337), (489, 42415), (499, 41565), (815, 25449), (1497, 13855), (2445, 8483), (2495, 8313), (2771, 7485)]