21283888

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{8161}}^1$

素因数の和:8332

約数の個数: 20

約数和(自身を含む): 41495608

約数和(自身を除く): 20211720

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 8161, 16322, 32644, 65288, 130576, 1330243, 2660486, 5320972, 10641944, 21283888]

約数ペア:

[(1, 21283888), (2, 10641944), (4, 5320972), (8, 2660486), (16, 1330243), (163, 130576), (326, 65288), (652, 32644), (1304, 16322), (2608, 8161)]