21278256

素因数分解:

$2^4\times 3^1\times {\mathrm{37}}^1\times {\mathrm{11981}}^1$

素因数の和:12029

約数の個数: 40

約数和(自身を含む): 56459184

約数和(自身を除く): 35180928

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 37, 48, 74, 111, 148, 222, 296, 444, 592, 888, 1776, 11981, 23962, 35943, 47924, 71886, 95848, 143772, 191696, 287544, 443297, 575088, 886594, 1329891, 1773188, 2659782, 3546376, 5319564, 7092752, 10639128, 21278256]

約数ペア:

[(1, 21278256), (2, 10639128), (3, 7092752), (4, 5319564), (6, 3546376), (8, 2659782), (12, 1773188), (16, 1329891), (24, 886594), (37, 575088), (48, 443297), (74, 287544), (111, 191696), (148, 143772), (222, 95848), (296, 71886), (444, 47924), (592, 35943), (888, 23962), (1776, 11981)]