178129220

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{207127}}^1$

素因数の和:207179

約数の個数: 24

約数和(自身を含む): 382772544

約数和(自身を除く): 204643324

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 207127, 414254, 828508, 1035635, 2071270, 4142540, 8906461, 17812922, 35625844, 44532305, 89064610, 178129220]

約数ペア:

[(1, 178129220), (2, 89064610), (4, 44532305), (5, 35625844), (10, 17812922), (20, 8906461), (43, 4142540), (86, 2071270), (172, 1035635), (215, 828508), (430, 414254), (860, 207127)]