21765513

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1597}}^1$

素因数の和:1677

約数の個数: 32

約数和(自身を含む): 36817920

約数和(自身を除く): 15052407

約数列:

[1, 3, 7, 11, 21, 33, 59, 77, 177, 231, 413, 649, 1239, 1597, 1947, 4543, 4791, 11179, 13629, 17567, 33537, 52701, 94223, 122969, 282669, 368907, 659561, 1036453, 1978683, 3109359, 7255171, 21765513]

約数ペア:

[(1, 21765513), (3, 7255171), (7, 3109359), (11, 1978683), (21, 1036453), (33, 659561), (59, 368907), (77, 282669), (177, 122969), (231, 94223), (413, 52701), (649, 33537), (1239, 17567), (1597, 13629), (1947, 11179), (4543, 4791)]