21111608

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:516

約数の個数: 64

約数和(自身を含む): 48591360

約数和(自身を除く): 27479752

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 37, 46, 56, 74, 92, 148, 161, 184, 259, 296, 322, 443, 518, 644, 851, 886, 1036, 1288, 1702, 1772, 2072, 3101, 3404, 3544, 5957, 6202, 6808, 10189, 11914, 12404, 16391, 20378, 23828, 24808, 32782, 40756, 47656, 65564, 71323, 81512, 114737, 131128, 142646, 229474, 285292, 376993, 458948, 570584, 753986, 917896, 1507972, 2638951, 3015944, 5277902, 10555804, 21111608]

約数ペア:

[(1, 21111608), (2, 10555804), (4, 5277902), (7, 3015944), (8, 2638951), (14, 1507972), (23, 917896), (28, 753986), (37, 570584), (46, 458948), (56, 376993), (74, 285292), (92, 229474), (148, 142646), (161, 131128), (184, 114737), (259, 81512), (296, 71323), (322, 65564), (443, 47656), (518, 40756), (644, 32782), (851, 24808), (886, 23828), (1036, 20378), (1288, 16391), (1702, 12404), (1772, 11914), (2072, 10189), (3101, 6808), (3404, 6202), (3544, 5957)]