217871138

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1\times {\mathrm{487}}^1$

素因数の和:762

約数の個数: 32

約数和(自身を含む): 352179840

約数和(自身を除く): 134308702

約数列:

[1, 2, 19, 38, 61, 122, 193, 386, 487, 974, 1159, 2318, 3667, 7334, 9253, 11773, 18506, 23546, 29707, 59414, 93991, 187982, 223687, 447374, 564433, 1128866, 1785829, 3571658, 5733451, 11466902, 108935569, 217871138]

約数ペア:

[(1, 217871138), (2, 108935569), (19, 11466902), (38, 5733451), (61, 3571658), (122, 1785829), (193, 1128866), (386, 564433), (487, 447374), (974, 223687), (1159, 187982), (2318, 93991), (3667, 59414), (7334, 29707), (9253, 23546), (11773, 18506)]