20815980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{346933}}^1$

素因数の和:346945

約数の個数: 24

約数和(自身を含む): 58284912

約数和(自身を除く): 37468932

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 346933, 693866, 1040799, 1387732, 1734665, 2081598, 3469330, 4163196, 5203995, 6938660, 10407990, 20815980]

約数ペア:

[(1, 20815980), (2, 10407990), (3, 6938660), (4, 5203995), (5, 4163196), (6, 3469330), (10, 2081598), (12, 1734665), (15, 1387732), (20, 1040799), (30, 693866), (60, 346933)]