21164185

素因数分解:

$5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{277}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 30424320

約数和(自身を除く): 9260135

約数列:

[1, 5, 7, 35, 37, 59, 185, 259, 277, 295, 413, 1295, 1385, 1939, 2065, 2183, 9695, 10249, 10915, 15281, 16343, 51245, 71743, 76405, 81715, 114401, 358715, 572005, 604691, 3023455, 4232837, 21164185]

約数ペア:

[(1, 21164185), (5, 4232837), (7, 3023455), (35, 604691), (37, 572005), (59, 358715), (185, 114401), (259, 81715), (277, 76405), (295, 71743), (413, 51245), (1295, 16343), (1385, 15281), (1939, 10915), (2065, 10249), (2183, 9695)]