217756107

素因数分解:

$3^4\times {\mathrm{349}}^1\times {\mathrm{7703}}^1$

素因数の和:8064

約数の個数: 20

約数和(自身を含む): 326264400

約数和(自身を除く): 108508293

約数列:

[1, 3, 9, 27, 81, 349, 1047, 3141, 7703, 9423, 23109, 28269, 69327, 207981, 623943, 2688347, 8065041, 24195123, 72585369, 217756107]

約数ペア:

[(1, 217756107), (3, 72585369), (9, 24195123), (27, 8065041), (81, 2688347), (349, 623943), (1047, 207981), (3141, 69327), (7703, 28269), (9423, 23109)]