1380457720

素因数分解:

$2^3\times 5^1\times {\mathrm{113}}^1\times {\mathrm{305411}}^1$

素因数の和:305535

約数の個数: 32

約数和(自身を含む): 3133527120

約数和(自身を除く): 1753069400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 113, 226, 452, 565, 904, 1130, 2260, 4520, 305411, 610822, 1221644, 1527055, 2443288, 3054110, 6108220, 12216440, 34511443, 69022886, 138045772, 172557215, 276091544, 345114430, 690228860, 1380457720]

約数ペア:

[(1, 1380457720), (2, 690228860), (4, 345114430), (5, 276091544), (8, 172557215), (10, 138045772), (20, 69022886), (40, 34511443), (113, 12216440), (226, 6108220), (452, 3054110), (565, 2443288), (904, 1527055), (1130, 1221644), (2260, 610822), (4520, 305411)]