20395208

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1231}}^1$

素因数の和:1365

約数の個数: 32

約数和(自身を含む): 40656000

約数和(自身を除く): 20260792

約数列:

[1, 2, 4, 8, 19, 38, 76, 109, 152, 218, 436, 872, 1231, 2071, 2462, 4142, 4924, 8284, 9848, 16568, 23389, 46778, 93556, 134179, 187112, 268358, 536716, 1073432, 2549401, 5098802, 10197604, 20395208]

約数ペア:

[(1, 20395208), (2, 10197604), (4, 5098802), (8, 2549401), (19, 1073432), (38, 536716), (76, 268358), (109, 187112), (152, 134179), (218, 93556), (436, 46778), (872, 23389), (1231, 16568), (2071, 9848), (2462, 8284), (4142, 4924)]