21691346

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 35389440

約数和(自身を除く): 13698094

約数列:

[1, 2, 23, 46, 47, 79, 94, 127, 158, 254, 1081, 1817, 2162, 2921, 3634, 3713, 5842, 5969, 7426, 10033, 11938, 20066, 85399, 137287, 170798, 230759, 274574, 461518, 471551, 943102, 10845673, 21691346]

約数ペア:

[(1, 21691346), (2, 10845673), (23, 943102), (46, 471551), (47, 461518), (79, 274574), (94, 230759), (127, 170798), (158, 137287), (254, 85399), (1081, 20066), (1817, 11938), (2162, 10033), (2921, 7426), (3634, 5969), (3713, 5842)]