20647924

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{1153}}^1$

素因数の和:1216

約数の個数: 36

約数和(自身を含む): 40826212

約数和(自身を除く): 20178288

約数列:

[1, 2, 4, 11, 22, 37, 44, 74, 121, 148, 242, 407, 484, 814, 1153, 1628, 2306, 4477, 4612, 8954, 12683, 17908, 25366, 42661, 50732, 85322, 139513, 170644, 279026, 469271, 558052, 938542, 1877084, 5161981, 10323962, 20647924]

約数ペア:

[(1, 20647924), (2, 10323962), (4, 5161981), (11, 1877084), (22, 938542), (37, 558052), (44, 469271), (74, 279026), (121, 170644), (148, 139513), (242, 85322), (407, 50732), (484, 42661), (814, 25366), (1153, 17908), (1628, 12683), (2306, 8954), (4477, 4612)]