20285780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32719}}^1$

素因数の和:32759

約数の個数: 24

約数和(自身を含む): 43975680

約数和(自身を除く): 23689900

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32719, 65438, 130876, 163595, 327190, 654380, 1014289, 2028578, 4057156, 5071445, 10142890, 20285780]

約数ペア:

[(1, 20285780), (2, 10142890), (4, 5071445), (5, 4057156), (10, 2028578), (20, 1014289), (31, 654380), (62, 327190), (124, 163595), (155, 130876), (310, 65438), (620, 32719)]