18808660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72341}}^1$

素因数の和:72363

約数の個数: 24

約数和(自身を含む): 42537096

約数和(自身を除く): 23728436

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72341, 144682, 289364, 361705, 723410, 940433, 1446820, 1880866, 3761732, 4702165, 9404330, 18808660]

約数ペア:

[(1, 18808660), (2, 9404330), (4, 4702165), (5, 3761732), (10, 1880866), (13, 1446820), (20, 940433), (26, 723410), (52, 361705), (65, 289364), (130, 144682), (260, 72341)]