20707424

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:303

約数の個数: 48

約数和(自身を含む): 42411600

約数和(自身を除く): 21704176

約数列:

[1, 2, 4, 8, 16, 32, 43, 86, 101, 149, 172, 202, 298, 344, 404, 596, 688, 808, 1192, 1376, 1616, 2384, 3232, 4343, 4768, 6407, 8686, 12814, 15049, 17372, 25628, 30098, 34744, 51256, 60196, 69488, 102512, 120392, 138976, 205024, 240784, 481568, 647107, 1294214, 2588428, 5176856, 10353712, 20707424]

約数ペア:

[(1, 20707424), (2, 10353712), (4, 5176856), (8, 2588428), (16, 1294214), (32, 647107), (43, 481568), (86, 240784), (101, 205024), (149, 138976), (172, 120392), (202, 102512), (298, 69488), (344, 60196), (404, 51256), (596, 34744), (688, 30098), (808, 25628), (1192, 17372), (1376, 15049), (1616, 12814), (2384, 8686), (3232, 6407), (4343, 4768)]