30201980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{21269}}^1$

素因数の和:21349

約数の個数: 24

約数和(自身を含む): 64320480

約数和(自身を除く): 34118500

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 21269, 42538, 85076, 106345, 212690, 425380, 1510099, 3020198, 6040396, 7550495, 15100990, 30201980]

約数ペア:

[(1, 30201980), (2, 15100990), (4, 7550495), (5, 6040396), (10, 3020198), (20, 1510099), (71, 425380), (142, 212690), (284, 106345), (355, 85076), (710, 42538), (1420, 21269)]