21678966

素因数分解:

$2^1\times 3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{757}}^1$

素因数の和:845

約数の個数: 48

約数和(自身を含む): 49427664

約数和(自身を除く): 27748698

約数列:

[1, 2, 3, 6, 9, 18, 37, 43, 74, 86, 111, 129, 222, 258, 333, 387, 666, 757, 774, 1514, 1591, 2271, 3182, 4542, 4773, 6813, 9546, 13626, 14319, 28009, 28638, 32551, 56018, 65102, 84027, 97653, 168054, 195306, 252081, 292959, 504162, 585918, 1204387, 2408774, 3613161, 7226322, 10839483, 21678966]

約数ペア:

[(1, 21678966), (2, 10839483), (3, 7226322), (6, 3613161), (9, 2408774), (18, 1204387), (37, 585918), (43, 504162), (74, 292959), (86, 252081), (111, 195306), (129, 168054), (222, 97653), (258, 84027), (333, 65102), (387, 56018), (666, 32551), (757, 28638), (774, 28009), (1514, 14319), (1591, 13626), (2271, 9546), (3182, 6813), (4542, 4773)]