20640780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{114671}}^1$

素因数の和:114686

約数の個数: 36

約数和(自身を含む): 62610912

約数和(自身を除く): 41970132

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 114671, 229342, 344013, 458684, 573355, 688026, 1032039, 1146710, 1376052, 1720065, 2064078, 2293420, 3440130, 4128156, 5160195, 6880260, 10320390, 20640780]

約数ペア:

[(1, 20640780), (2, 10320390), (3, 6880260), (4, 5160195), (5, 4128156), (6, 3440130), (9, 2293420), (10, 2064078), (12, 1720065), (15, 1376052), (18, 1146710), (20, 1032039), (30, 688026), (36, 573355), (45, 458684), (60, 344013), (90, 229342), (180, 114671)]