21306992

素因数分解:

$2^4\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1847}}^1$

素因数の和:1965

約数の個数: 40

約数和(自身を含む): 47663616

約数和(自身を除く): 26356624

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 103, 112, 206, 412, 721, 824, 1442, 1648, 1847, 2884, 3694, 5768, 7388, 11536, 12929, 14776, 25858, 29552, 51716, 103432, 190241, 206864, 380482, 760964, 1331687, 1521928, 2663374, 3043856, 5326748, 10653496, 21306992]

約数ペア:

[(1, 21306992), (2, 10653496), (4, 5326748), (7, 3043856), (8, 2663374), (14, 1521928), (16, 1331687), (28, 760964), (56, 380482), (103, 206864), (112, 190241), (206, 103432), (412, 51716), (721, 29552), (824, 25858), (1442, 14776), (1648, 12929), (1847, 11536), (2884, 7388), (3694, 5768)]