21780726

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{1579}}^1$

素因数の和:1625

約数の個数: 48

約数和(自身を含む): 50433600

約数和(自身を除く): 28652874

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 57, 66, 114, 121, 209, 242, 363, 418, 627, 726, 1254, 1579, 2299, 3158, 4598, 4737, 6897, 9474, 13794, 17369, 30001, 34738, 52107, 60002, 90003, 104214, 180006, 191059, 330011, 382118, 573177, 660022, 990033, 1146354, 1980066, 3630121, 7260242, 10890363, 21780726]

約数ペア:

[(1, 21780726), (2, 10890363), (3, 7260242), (6, 3630121), (11, 1980066), (19, 1146354), (22, 990033), (33, 660022), (38, 573177), (57, 382118), (66, 330011), (114, 191059), (121, 180006), (209, 104214), (242, 90003), (363, 60002), (418, 52107), (627, 34738), (726, 30001), (1254, 17369), (1579, 13794), (2299, 9474), (3158, 6897), (4598, 4737)]