21120464

素因数分解:

$2^4\times {\mathrm{337}}^1\times {\mathrm{3917}}^1$

素因数の和:4262

約数の個数: 20

約数和(自身を含む): 41052804

約数和(自身を除く): 19932340

約数列:

[1, 2, 4, 8, 16, 337, 674, 1348, 2696, 3917, 5392, 7834, 15668, 31336, 62672, 1320029, 2640058, 5280116, 10560232, 21120464]

約数ペア:

[(1, 21120464), (2, 10560232), (4, 5280116), (8, 2640058), (16, 1320029), (337, 62672), (674, 31336), (1348, 15668), (2696, 7834), (3917, 5392)]