65681680

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{3271}}^1$

素因数の和:3535

約数の個数: 40

約数和(自身を含む): 153365184

約数和(自身を除く): 87683504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 2008, 2510, 3271, 4016, 5020, 6542, 10040, 13084, 16355, 20080, 26168, 32710, 52336, 65420, 130840, 261680, 821021, 1642042, 3284084, 4105105, 6568168, 8210210, 13136336, 16420420, 32840840, 65681680]

約数ペア:

[(1, 65681680), (2, 32840840), (4, 16420420), (5, 13136336), (8, 8210210), (10, 6568168), (16, 4105105), (20, 3284084), (40, 1642042), (80, 821021), (251, 261680), (502, 130840), (1004, 65420), (1255, 52336), (2008, 32710), (2510, 26168), (3271, 20080), (4016, 16355), (5020, 13084), (6542, 10040)]