27811540

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{443}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 60717888

約数和(自身を除く): 32906348

約数列:

[1, 2, 4, 5, 10, 20, 43, 73, 86, 146, 172, 215, 292, 365, 430, 443, 730, 860, 886, 1460, 1772, 2215, 3139, 4430, 6278, 8860, 12556, 15695, 19049, 31390, 32339, 38098, 62780, 64678, 76196, 95245, 129356, 161695, 190490, 323390, 380980, 646780, 1390577, 2781154, 5562308, 6952885, 13905770, 27811540]

約数ペア:

[(1, 27811540), (2, 13905770), (4, 6952885), (5, 5562308), (10, 2781154), (20, 1390577), (43, 646780), (73, 380980), (86, 323390), (146, 190490), (172, 161695), (215, 129356), (292, 95245), (365, 76196), (430, 64678), (443, 62780), (730, 38098), (860, 32339), (886, 31390), (1460, 19049), (1772, 15695), (2215, 12556), (3139, 8860), (4430, 6278)]