30279740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{257}}^1$

素因数の和:446

約数の個数: 48

約数和(自身を含む): 65796192

約数和(自身を除く): 35516452

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 137, 172, 215, 257, 274, 430, 514, 548, 685, 860, 1028, 1285, 1370, 2570, 2740, 5140, 5891, 11051, 11782, 22102, 23564, 29455, 35209, 44204, 55255, 58910, 70418, 110510, 117820, 140836, 176045, 221020, 352090, 704180, 1513987, 3027974, 6055948, 7569935, 15139870, 30279740]

約数ペア:

[(1, 30279740), (2, 15139870), (4, 7569935), (5, 6055948), (10, 3027974), (20, 1513987), (43, 704180), (86, 352090), (137, 221020), (172, 176045), (215, 140836), (257, 117820), (274, 110510), (430, 70418), (514, 58910), (548, 55255), (685, 44204), (860, 35209), (1028, 29455), (1285, 23564), (1370, 22102), (2570, 11782), (2740, 11051), (5140, 5891)]