21305344

素因数分解:

$2^{11}\times {\mathrm{101}}^1\times {\mathrm{103}}^1$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 43439760

約数和(自身を除く): 22134416

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 103, 128, 202, 206, 256, 404, 412, 512, 808, 824, 1024, 1616, 1648, 2048, 3232, 3296, 6464, 6592, 10403, 12928, 13184, 20806, 25856, 26368, 41612, 51712, 52736, 83224, 103424, 105472, 166448, 206848, 210944, 332896, 665792, 1331584, 2663168, 5326336, 10652672, 21305344]

約数ペア:

[(1, 21305344), (2, 10652672), (4, 5326336), (8, 2663168), (16, 1331584), (32, 665792), (64, 332896), (101, 210944), (103, 206848), (128, 166448), (202, 105472), (206, 103424), (256, 83224), (404, 52736), (412, 51712), (512, 41612), (808, 26368), (824, 25856), (1024, 20806), (1616, 13184), (1648, 12928), (2048, 10403), (3232, 6592), (3296, 6464)]