19777604

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{409}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 43532160

約数和(自身を除く): 23754556

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 157, 308, 314, 409, 628, 818, 1099, 1636, 1727, 2198, 2863, 3454, 4396, 4499, 5726, 6908, 8998, 11452, 12089, 17996, 24178, 31493, 48356, 62986, 64213, 125972, 128426, 256852, 449491, 706343, 898982, 1412686, 1797964, 2825372, 4944401, 9888802, 19777604]

約数ペア:

[(1, 19777604), (2, 9888802), (4, 4944401), (7, 2825372), (11, 1797964), (14, 1412686), (22, 898982), (28, 706343), (44, 449491), (77, 256852), (154, 128426), (157, 125972), (308, 64213), (314, 62986), (409, 48356), (628, 31493), (818, 24178), (1099, 17996), (1636, 12089), (1727, 11452), (2198, 8998), (2863, 6908), (3454, 5726), (4396, 4499)]