21147136

素因数分解:

$2^9\times {\mathrm{103}}^1\times {\mathrm{401}}^1$

素因数の和:522

約数の個数: 40

約数和(自身を含む): 42769584

約数和(自身を除く): 21622448

約数列:

[1, 2, 4, 8, 16, 32, 64, 103, 128, 206, 256, 401, 412, 512, 802, 824, 1604, 1648, 3208, 3296, 6416, 6592, 12832, 13184, 25664, 26368, 41303, 51328, 52736, 82606, 102656, 165212, 205312, 330424, 660848, 1321696, 2643392, 5286784, 10573568, 21147136]

約数ペア:

[(1, 21147136), (2, 10573568), (4, 5286784), (8, 2643392), (16, 1321696), (32, 660848), (64, 330424), (103, 205312), (128, 165212), (206, 102656), (256, 82606), (401, 52736), (412, 51328), (512, 41303), (802, 26368), (824, 25664), (1604, 13184), (1648, 12832), (3208, 6592), (3296, 6416)]