221918207

素因数分解:

$7^2\times {\mathrm{89}}^1\times {\mathrm{151}}^1\times {\mathrm{337}}^1$

素因数の和:591

約数の個数: 24

約数和(自身を含む): 263558880

約数和(自身を除く): 41640673

約数列:

[1, 7, 49, 89, 151, 337, 623, 1057, 2359, 4361, 7399, 13439, 16513, 29993, 50887, 94073, 209951, 356209, 658511, 1469657, 2493463, 4528943, 31702601, 221918207]

約数ペア:

[(1, 221918207), (7, 31702601), (49, 4528943), (89, 2493463), (151, 1469657), (337, 658511), (623, 356209), (1057, 209951), (2359, 94073), (4361, 50887), (7399, 29993), (13439, 16513)]