20385879

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 30105600

約数和(自身を除く): 9719721

約数列:

[1, 3, 19, 31, 57, 83, 93, 139, 249, 417, 589, 1577, 1767, 2573, 2641, 4309, 4731, 7719, 7923, 11537, 12927, 34611, 48887, 81871, 146661, 219203, 245613, 357647, 657609, 1072941, 6795293, 20385879]

約数ペア:

[(1, 20385879), (3, 6795293), (19, 1072941), (31, 657609), (57, 357647), (83, 245613), (93, 219203), (139, 146661), (249, 81871), (417, 48887), (589, 34611), (1577, 12927), (1767, 11537), (2573, 7923), (2641, 7719), (4309, 4731)]