31788510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{81509}}^1$

素因数の和:81532

約数の個数: 32

約数和(自身を含む): 82162080

約数和(自身を除く): 50373570

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 81509, 163018, 244527, 407545, 489054, 815090, 1059617, 1222635, 2119234, 2445270, 3178851, 5298085, 6357702, 10596170, 15894255, 31788510]

約数ペア:

[(1, 31788510), (2, 15894255), (3, 10596170), (5, 6357702), (6, 5298085), (10, 3178851), (13, 2445270), (15, 2119234), (26, 1222635), (30, 1059617), (39, 815090), (65, 489054), (78, 407545), (130, 244527), (195, 163018), (390, 81509)]