20555888

素因数分解:

$2^4\times {\mathrm{257}}^1\times {\mathrm{4999}}^1$

素因数の和:5264

約数の個数: 20

約数和(自身を含む): 39990000

約数和(自身を除く): 19434112

約数列:

[1, 2, 4, 8, 16, 257, 514, 1028, 2056, 4112, 4999, 9998, 19996, 39992, 79984, 1284743, 2569486, 5138972, 10277944, 20555888]

約数ペア:

[(1, 20555888), (2, 10277944), (4, 5138972), (8, 2569486), (16, 1284743), (257, 79984), (514, 39992), (1028, 19996), (2056, 9998), (4112, 4999)]