30986660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{263}}^1$

素因数の和:452

約数の個数: 48

約数和(自身を含む): 67326336

約数和(自身を除く): 36339676

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 137, 172, 215, 263, 274, 430, 526, 548, 685, 860, 1052, 1315, 1370, 2630, 2740, 5260, 5891, 11309, 11782, 22618, 23564, 29455, 36031, 45236, 56545, 58910, 72062, 113090, 117820, 144124, 180155, 226180, 360310, 720620, 1549333, 3098666, 6197332, 7746665, 15493330, 30986660]

約数ペア:

[(1, 30986660), (2, 15493330), (4, 7746665), (5, 6197332), (10, 3098666), (20, 1549333), (43, 720620), (86, 360310), (137, 226180), (172, 180155), (215, 144124), (263, 117820), (274, 113090), (430, 72062), (526, 58910), (548, 56545), (685, 45236), (860, 36031), (1052, 29455), (1315, 23564), (1370, 22618), (2630, 11782), (2740, 11309), (5260, 5891)]