20638245

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{367}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 34762752

約数和(自身を除く): 14124507

約数列:

[1, 3, 5, 15, 23, 69, 115, 163, 345, 367, 489, 815, 1101, 1835, 2445, 3749, 5505, 8441, 11247, 18745, 25323, 42205, 56235, 59821, 126615, 179463, 299105, 897315, 1375883, 4127649, 6879415, 20638245]

約数ペア:

[(1, 20638245), (3, 6879415), (5, 4127649), (15, 1375883), (23, 897315), (69, 299105), (115, 179463), (163, 126615), (345, 59821), (367, 56235), (489, 42205), (815, 25323), (1101, 18745), (1835, 11247), (2445, 8441), (3749, 5505)]