21069808

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{10369}}^1$

素因数の和:10504

約数の個数: 20

約数和(自身を含む): 41148160

約数和(自身を除く): 20078352

約数列:

[1, 2, 4, 8, 16, 127, 254, 508, 1016, 2032, 10369, 20738, 41476, 82952, 165904, 1316863, 2633726, 5267452, 10534904, 21069808]

約数ペア:

[(1, 21069808), (2, 10534904), (4, 5267452), (8, 2633726), (16, 1316863), (127, 165904), (254, 82952), (508, 41476), (1016, 20738), (2032, 10369)]