128537320

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{74731}}^1$

素因数の和:74785

約数の個数: 32

約数和(自身を含む): 295938720

約数和(自身を除く): 167401400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 74731, 149462, 298924, 373655, 597848, 747310, 1494620, 2989240, 3213433, 6426866, 12853732, 16067165, 25707464, 32134330, 64268660, 128537320]

約数ペア:

[(1, 128537320), (2, 64268660), (4, 32134330), (5, 25707464), (8, 16067165), (10, 12853732), (20, 6426866), (40, 3213433), (43, 2989240), (86, 1494620), (172, 747310), (215, 597848), (344, 373655), (430, 298924), (860, 149462), (1720, 74731)]