20535880

素因数分解:

$2^3\times 5^1\times {\mathrm{513397}}^1$

素因数の和:513408

約数の個数: 16

約数和(自身を含む): 46205820

約数和(自身を除く): 25669940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 513397, 1026794, 2053588, 2566985, 4107176, 5133970, 10267940, 20535880]

約数ペア:

[(1, 20535880), (2, 10267940), (4, 5133970), (5, 4107176), (8, 2566985), (10, 2053588), (20, 1026794), (40, 513397)]