21792799

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:415

約数の個数: 24

約数和(自身を含む): 26971488

約数和(自身を除く): 5178689

約数列:

[1, 7, 23, 49, 61, 161, 317, 427, 1127, 1403, 2219, 2989, 7291, 9821, 15533, 19337, 51037, 68747, 135359, 357259, 444751, 947513, 3113257, 21792799]

約数ペア:

[(1, 21792799), (7, 3113257), (23, 947513), (49, 444751), (61, 357259), (161, 135359), (317, 68747), (427, 51037), (1127, 19337), (1403, 15533), (2219, 9821), (2989, 7291)]