20719377

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^2$

素因数の和:250

約数の個数: 36

約数和(自身を含む): 35652864

約数和(自身を除く): 14933487

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 103, 217, 279, 309, 651, 721, 927, 1953, 2163, 3193, 6489, 9579, 10609, 22351, 28737, 31827, 67053, 74263, 95481, 201159, 222789, 328879, 668367, 986637, 2302153, 2959911, 6906459, 20719377]

約数ペア:

[(1, 20719377), (3, 6906459), (7, 2959911), (9, 2302153), (21, 986637), (31, 668367), (63, 328879), (93, 222789), (103, 201159), (217, 95481), (279, 74263), (309, 67053), (651, 31827), (721, 28737), (927, 22351), (1953, 10609), (2163, 9579), (3193, 6489)]