21115456

素因数分解:

$2^6\times {\mathrm{37}}^2\times {\mathrm{241}}^1$

素因数の和:327

約数の個数: 42

約数和(自身を含む): 43242738

約数和(自身を除く): 22127282

約数列:

[1, 2, 4, 8, 16, 32, 37, 64, 74, 148, 241, 296, 482, 592, 964, 1184, 1369, 1928, 2368, 2738, 3856, 5476, 7712, 8917, 10952, 15424, 17834, 21904, 35668, 43808, 71336, 87616, 142672, 285344, 329929, 570688, 659858, 1319716, 2639432, 5278864, 10557728, 21115456]

約数ペア:

[(1, 21115456), (2, 10557728), (4, 5278864), (8, 2639432), (16, 1319716), (32, 659858), (37, 570688), (64, 329929), (74, 285344), (148, 142672), (241, 87616), (296, 71336), (482, 43808), (592, 35668), (964, 21904), (1184, 17834), (1369, 15424), (1928, 10952), (2368, 8917), (2738, 7712), (3856, 5476)]