211017985

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{307}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 273208320

約数和(自身を除く): 62190335

約数列:

[1, 5, 23, 43, 115, 139, 215, 307, 695, 989, 1535, 3197, 4945, 5977, 7061, 13201, 15985, 29885, 35305, 42673, 66005, 137471, 213365, 303623, 687355, 981479, 1518115, 1834939, 4907395, 9174695, 42203597, 211017985]

約数ペア:

[(1, 211017985), (5, 42203597), (23, 9174695), (43, 4907395), (115, 1834939), (139, 1518115), (215, 981479), (307, 687355), (695, 303623), (989, 213365), (1535, 137471), (3197, 66005), (4945, 42673), (5977, 35305), (7061, 29885), (13201, 15985)]