21589113

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{2551}}^1$

素因数の和:2605

約数の個数: 32

約数和(自身を含む): 36585472

約数和(自身を除く): 14996359

約数列:

[1, 3, 7, 13, 21, 31, 39, 91, 93, 217, 273, 403, 651, 1209, 2551, 2821, 7653, 8463, 17857, 33163, 53571, 79081, 99489, 232141, 237243, 553567, 696423, 1028053, 1660701, 3084159, 7196371, 21589113]

約数ペア:

[(1, 21589113), (3, 7196371), (7, 3084159), (13, 1660701), (21, 1028053), (31, 696423), (39, 553567), (91, 237243), (93, 232141), (217, 99489), (273, 79081), (403, 53571), (651, 33163), (1209, 17857), (2551, 8463), (2821, 7653)]