21340336

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{32531}}^1$

素因数の和:32580

約数の個数: 20

約数和(自身を含む): 42356664

約数和(自身を除く): 21016328

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 328, 656, 32531, 65062, 130124, 260248, 520496, 1333771, 2667542, 5335084, 10670168, 21340336]

約数ペア:

[(1, 21340336), (2, 10670168), (4, 5335084), (8, 2667542), (16, 1333771), (41, 520496), (82, 260248), (164, 130124), (328, 65062), (656, 32531)]