28199620

素因数分解:

$2^2\times 5^1\times {\mathrm{167}}^1\times {\mathrm{8443}}^1$

素因数の和:8619

約数の個数: 24

約数和(自身を含む): 59580864

約数和(自身を除く): 31381244

約数列:

[1, 2, 4, 5, 10, 20, 167, 334, 668, 835, 1670, 3340, 8443, 16886, 33772, 42215, 84430, 168860, 1409981, 2819962, 5639924, 7049905, 14099810, 28199620]

約数ペア:

[(1, 28199620), (2, 14099810), (4, 7049905), (5, 5639924), (10, 2819962), (20, 1409981), (167, 168860), (334, 84430), (668, 42215), (835, 33772), (1670, 16886), (3340, 8443)]