21749916

素因数分解:

$2^2\times 3^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{691}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 52857728

約数和(自身を除く): 31107812

約数列:

[1, 2, 3, 4, 6, 12, 43, 61, 86, 122, 129, 172, 183, 244, 258, 366, 516, 691, 732, 1382, 2073, 2623, 2764, 4146, 5246, 7869, 8292, 10492, 15738, 29713, 31476, 42151, 59426, 84302, 89139, 118852, 126453, 168604, 178278, 252906, 356556, 505812, 1812493, 3624986, 5437479, 7249972, 10874958, 21749916]

約数ペア:

[(1, 21749916), (2, 10874958), (3, 7249972), (4, 5437479), (6, 3624986), (12, 1812493), (43, 505812), (61, 356556), (86, 252906), (122, 178278), (129, 168604), (172, 126453), (183, 118852), (244, 89139), (258, 84302), (366, 59426), (516, 42151), (691, 31476), (732, 29713), (1382, 15738), (2073, 10492), (2623, 8292), (2764, 7869), (4146, 5246)]