20778681

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{307}}^1$

素因数の和:621

約数の個数: 32

約数和(自身を含む): 34771968

約数和(自身を除く): 13993287

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 293, 307, 879, 921, 2051, 2149, 3223, 3377, 6153, 6447, 9669, 10131, 22561, 23639, 67683, 70917, 89951, 269853, 629657, 989461, 1888971, 2968383, 6926227, 20778681]

約数ペア:

[(1, 20778681), (3, 6926227), (7, 2968383), (11, 1888971), (21, 989461), (33, 629657), (77, 269853), (231, 89951), (293, 70917), (307, 67683), (879, 23639), (921, 22561), (2051, 10131), (2149, 9669), (3223, 6447), (3377, 6153)]