21009712

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32027}}^1$

素因数の和:32076

約数の個数: 20

約数和(自身を含む): 41700456

約数和(自身を除く): 20690744

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32027, 64054, 128108, 256216, 512432, 1313107, 2626214, 5252428, 10504856, 21009712]

約数ペア:

[(1, 21009712), (2, 10504856), (4, 5252428), (8, 2626214), (16, 1313107), (41, 512432), (82, 256216), (164, 128108), (328, 64054), (656, 32027)]