20139021

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{73}}^1\times {\mathrm{151}}^1$

素因数の和:266

約数の個数: 48

約数和(自身を含む): 35093760

約数和(自身を除く): 14954739

約数列:

[1, 3, 7, 9, 21, 29, 63, 73, 87, 151, 203, 219, 261, 453, 511, 609, 657, 1057, 1359, 1533, 1827, 2117, 3171, 4379, 4599, 6351, 9513, 11023, 13137, 14819, 19053, 30653, 33069, 39411, 44457, 77161, 91959, 99207, 133371, 231483, 275877, 319667, 694449, 959001, 2237669, 2877003, 6713007, 20139021]

約数ペア:

[(1, 20139021), (3, 6713007), (7, 2877003), (9, 2237669), (21, 959001), (29, 694449), (63, 319667), (73, 275877), (87, 231483), (151, 133371), (203, 99207), (219, 91959), (261, 77161), (453, 44457), (511, 39411), (609, 33069), (657, 30653), (1057, 19053), (1359, 14819), (1533, 13137), (1827, 11023), (2117, 9513), (3171, 6351), (4379, 4599)]