81340760

素因数分解:

$2^3\times 5^1\times {\mathrm{1063}}^1\times {\mathrm{1913}}^1$

素因数の和:2987

約数の個数: 32

約数和(自身を含む): 183284640

約数和(自身を除く): 101943880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1063, 1913, 2126, 3826, 4252, 5315, 7652, 8504, 9565, 10630, 15304, 19130, 21260, 38260, 42520, 76520, 2033519, 4067038, 8134076, 10167595, 16268152, 20335190, 40670380, 81340760]

約数ペア:

[(1, 81340760), (2, 40670380), (4, 20335190), (5, 16268152), (8, 10167595), (10, 8134076), (20, 4067038), (40, 2033519), (1063, 76520), (1913, 42520), (2126, 38260), (3826, 21260), (4252, 19130), (5315, 15304), (7652, 10630), (8504, 9565)]