20390110

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2341}}^1$

素因数の和:2428

約数の個数: 32

約数和(自身を含む): 40132512

約数和(自身を除く): 19742402

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 335, 670, 871, 1742, 2341, 4355, 4682, 8710, 11705, 23410, 30433, 60866, 152165, 156847, 304330, 313694, 784235, 1568470, 2039011, 4078022, 10195055, 20390110]

約数ペア:

[(1, 20390110), (2, 10195055), (5, 4078022), (10, 2039011), (13, 1568470), (26, 784235), (65, 313694), (67, 304330), (130, 156847), (134, 152165), (335, 60866), (670, 30433), (871, 23410), (1742, 11705), (2341, 8710), (4355, 4682)]