21427720

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{23291}}^1$

素因数の和:23325

約数の個数: 32

約数和(自身を含む): 50310720

約数和(自身を除く): 28883000

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 920, 23291, 46582, 93164, 116455, 186328, 232910, 465820, 535693, 931640, 1071386, 2142772, 2678465, 4285544, 5356930, 10713860, 21427720]

約数ペア:

[(1, 21427720), (2, 10713860), (4, 5356930), (5, 4285544), (8, 2678465), (10, 2142772), (20, 1071386), (23, 931640), (40, 535693), (46, 465820), (92, 232910), (115, 186328), (184, 116455), (230, 93164), (460, 46582), (920, 23291)]