21491216

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{181}}^2$

素因数の和:411

約数の個数: 30

約数和(自身を含む): 42891786

約数和(自身を除く): 21400570

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 181, 328, 362, 656, 724, 1448, 2896, 7421, 14842, 29684, 32761, 59368, 65522, 118736, 131044, 262088, 524176, 1343201, 2686402, 5372804, 10745608, 21491216]

約数ペア:

[(1, 21491216), (2, 10745608), (4, 5372804), (8, 2686402), (16, 1343201), (41, 524176), (82, 262088), (164, 131044), (181, 118736), (328, 65522), (362, 59368), (656, 32761), (724, 29684), (1448, 14842), (2896, 7421)]