21439480

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1493}}^1$

素因数の和:1863

約数の個数: 32

約数和(自身を含む): 48405600

約数和(自身を除く): 26966120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1436, 1493, 1795, 2872, 2986, 3590, 5972, 7180, 7465, 11944, 14360, 14930, 29860, 59720, 535987, 1071974, 2143948, 2679935, 4287896, 5359870, 10719740, 21439480]

約数ペア:

[(1, 21439480), (2, 10719740), (4, 5359870), (5, 4287896), (8, 2679935), (10, 2143948), (20, 1071974), (40, 535987), (359, 59720), (718, 29860), (1436, 14930), (1493, 14360), (1795, 11944), (2872, 7465), (2986, 7180), (3590, 5972)]