20015780

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5591}}^1$

素因数の和:5779

約数の個数: 24

約数和(自身を含む): 42275520

約数和(自身を除く): 22259740

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 5591, 11182, 22364, 27955, 55910, 111820, 1000789, 2001578, 4003156, 5003945, 10007890, 20015780]

約数ペア:

[(1, 20015780), (2, 10007890), (4, 5003945), (5, 4003156), (10, 2001578), (20, 1000789), (179, 111820), (358, 55910), (716, 27955), (895, 22364), (1790, 11182), (3580, 5591)]