66966940

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{81667}}^1$

素因数の和:81717

約数の個数: 24

約数和(自身を含む): 144062352

約数和(自身を除く): 77095412

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 81667, 163334, 326668, 408335, 816670, 1633340, 3348347, 6696694, 13393388, 16741735, 33483470, 66966940]

約数ペア:

[(1, 66966940), (2, 33483470), (4, 16741735), (5, 13393388), (10, 6696694), (20, 3348347), (41, 1633340), (82, 816670), (164, 408335), (205, 326668), (410, 163334), (820, 81667)]