83770040

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{3257}}^1$

素因数の和:3911

約数の個数: 32

約数和(自身を含む): 188833680

約数和(自身を除く): 105063640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 1286, 2572, 3215, 3257, 5144, 6430, 6514, 12860, 13028, 16285, 25720, 26056, 32570, 65140, 130280, 2094251, 4188502, 8377004, 10471255, 16754008, 20942510, 41885020, 83770040]

約数ペア:

[(1, 83770040), (2, 41885020), (4, 20942510), (5, 16754008), (8, 10471255), (10, 8377004), (20, 4188502), (40, 2094251), (643, 130280), (1286, 65140), (2572, 32570), (3215, 26056), (3257, 25720), (5144, 16285), (6430, 13028), (6514, 12860)]