28495240

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{16567}}^1$

素因数の和:16621

約数の個数: 32

約数和(自身を含む): 65609280

約数和(自身を除く): 37114040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 16567, 33134, 66268, 82835, 132536, 165670, 331340, 662680, 712381, 1424762, 2849524, 3561905, 5699048, 7123810, 14247620, 28495240]

約数ペア:

[(1, 28495240), (2, 14247620), (4, 7123810), (5, 5699048), (8, 3561905), (10, 2849524), (20, 1424762), (40, 712381), (43, 662680), (86, 331340), (172, 165670), (215, 132536), (344, 82835), (430, 66268), (860, 33134), (1720, 16567)]