216663321

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{359}}^1\times {\mathrm{991}}^1$

素因数の和:1389

約数の個数: 32

約数和(自身を含む): 342835200

約数和(自身を除く): 126171879

約数列:

[1, 3, 7, 21, 29, 87, 203, 359, 609, 991, 1077, 2513, 2973, 6937, 7539, 10411, 20811, 28739, 31233, 72877, 86217, 201173, 218631, 355769, 603519, 1067307, 2490383, 7471149, 10317301, 30951903, 72221107, 216663321]

約数ペア:

[(1, 216663321), (3, 72221107), (7, 30951903), (21, 10317301), (29, 7471149), (87, 2490383), (203, 1067307), (359, 603519), (609, 355769), (991, 218631), (1077, 201173), (2513, 86217), (2973, 72877), (6937, 31233), (7539, 28739), (10411, 20811)]