20990718

素因数分解:

$2^1\times 3^3\times 7^2\times {\mathrm{7933}}^1$

素因数の和:7958

約数の個数: 48

約数和(自身を含む): 54268560

約数和(自身を除く): 33277842

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 49, 54, 63, 98, 126, 147, 189, 294, 378, 441, 882, 1323, 2646, 7933, 15866, 23799, 47598, 55531, 71397, 111062, 142794, 166593, 214191, 333186, 388717, 428382, 499779, 777434, 999558, 1166151, 1499337, 2332302, 2998674, 3498453, 6996906, 10495359, 20990718]

約数ペア:

[(1, 20990718), (2, 10495359), (3, 6996906), (6, 3498453), (7, 2998674), (9, 2332302), (14, 1499337), (18, 1166151), (21, 999558), (27, 777434), (42, 499779), (49, 428382), (54, 388717), (63, 333186), (98, 214191), (126, 166593), (147, 142794), (189, 111062), (294, 71397), (378, 55531), (441, 47598), (882, 23799), (1323, 15866), (2646, 7933)]