64318340

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{78437}}^1$

素因数の和:78487

約数の個数: 24

約数和(自身を含む): 138364632

約数和(自身を除く): 74046292

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 78437, 156874, 313748, 392185, 784370, 1568740, 3215917, 6431834, 12863668, 16079585, 32159170, 64318340]

約数ペア:

[(1, 64318340), (2, 32159170), (4, 16079585), (5, 12863668), (10, 6431834), (20, 3215917), (41, 1568740), (82, 784370), (164, 392185), (205, 313748), (410, 156874), (820, 78437)]