20543888

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1607}}^1$

素因数の和:1679

約数の個数: 40

約数和(自身を含む): 43068672

約数和(自身を除く): 22524784

約数列:

[1, 2, 4, 8, 16, 17, 34, 47, 68, 94, 136, 188, 272, 376, 752, 799, 1598, 1607, 3196, 3214, 6392, 6428, 12784, 12856, 25712, 27319, 54638, 75529, 109276, 151058, 218552, 302116, 437104, 604232, 1208464, 1283993, 2567986, 5135972, 10271944, 20543888]

約数ペア:

[(1, 20543888), (2, 10271944), (4, 5135972), (8, 2567986), (16, 1283993), (17, 1208464), (34, 604232), (47, 437104), (68, 302116), (94, 218552), (136, 151058), (188, 109276), (272, 75529), (376, 54638), (752, 27319), (799, 25712), (1598, 12856), (1607, 12784), (3196, 6428), (3214, 6392)]