20678270

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2531}}^1$

素因数の和:2600

約数の個数: 32

約数和(自身を含む): 40106880

約数和(自身を除く): 19428610

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 190, 215, 430, 817, 1634, 2531, 4085, 5062, 8170, 12655, 25310, 48089, 96178, 108833, 217666, 240445, 480890, 544165, 1088330, 2067827, 4135654, 10339135, 20678270]

約数ペア:

[(1, 20678270), (2, 10339135), (5, 4135654), (10, 2067827), (19, 1088330), (38, 544165), (43, 480890), (86, 240445), (95, 217666), (190, 108833), (215, 96178), (430, 48089), (817, 25310), (1634, 12655), (2531, 8170), (4085, 5062)]