21850185

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{12241}}^1$

素因数の和:12273

約数の個数: 32

約数和(自身を含む): 42308352

約数和(自身を除く): 20458167

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 12241, 36723, 61205, 85687, 183615, 208097, 257061, 428435, 624291, 1040485, 1285305, 1456679, 3121455, 4370037, 7283395, 21850185]

約数ペア:

[(1, 21850185), (3, 7283395), (5, 4370037), (7, 3121455), (15, 1456679), (17, 1285305), (21, 1040485), (35, 624291), (51, 428435), (85, 257061), (105, 208097), (119, 183615), (255, 85687), (357, 61205), (595, 36723), (1785, 12241)]