81857168

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{293}}^1\times {\mathrm{919}}^1$

素因数の和:1239

約数の個数: 40

約数和(自身を含む): 167697600

約数和(自身を除く): 85840432

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 293, 304, 586, 919, 1172, 1838, 2344, 3676, 4688, 5567, 7352, 11134, 14704, 17461, 22268, 34922, 44536, 69844, 89072, 139688, 269267, 279376, 538534, 1077068, 2154136, 4308272, 5116073, 10232146, 20464292, 40928584, 81857168]

約数ペア:

[(1, 81857168), (2, 40928584), (4, 20464292), (8, 10232146), (16, 5116073), (19, 4308272), (38, 2154136), (76, 1077068), (152, 538534), (293, 279376), (304, 269267), (586, 139688), (919, 89072), (1172, 69844), (1838, 44536), (2344, 34922), (3676, 22268), (4688, 17461), (5567, 14704), (7352, 11134)]