66502580

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{37361}}^1$

素因数の和:37459

約数の個数: 24

約数和(自身を含む): 141228360

約数和(自身を除く): 74725780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 37361, 74722, 149444, 186805, 373610, 747220, 3325129, 6650258, 13300516, 16625645, 33251290, 66502580]

約数ペア:

[(1, 66502580), (2, 33251290), (4, 16625645), (5, 13300516), (10, 6650258), (20, 3325129), (89, 747220), (178, 373610), (356, 186805), (445, 149444), (890, 74722), (1780, 37361)]