20729990

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1\times {\mathrm{313}}^1$

素因数の和:536

約数の個数: 32

約数和(自身を含む): 38659680

約数和(自身を除く): 17929690

約数列:

[1, 2, 5, 10, 37, 74, 179, 185, 313, 358, 370, 626, 895, 1565, 1790, 3130, 6623, 11581, 13246, 23162, 33115, 56027, 57905, 66230, 112054, 115810, 280135, 560270, 2072999, 4145998, 10364995, 20729990]

約数ペア:

[(1, 20729990), (2, 10364995), (5, 4145998), (10, 2072999), (37, 560270), (74, 280135), (179, 115810), (185, 112054), (313, 66230), (358, 57905), (370, 56027), (626, 33115), (895, 23162), (1565, 13246), (1790, 11581), (3130, 6623)]