68704820

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1\times {\mathrm{509}}^1$

素因数の和:932

約数の個数: 48

約数和(自身を含む): 153452880

約数和(自身を除く): 84748060

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 397, 509, 794, 1018, 1588, 1985, 2036, 2545, 3970, 5090, 6749, 7940, 8653, 10180, 13498, 17306, 26996, 33745, 34612, 43265, 67490, 86530, 134980, 173060, 202073, 404146, 808292, 1010365, 2020730, 3435241, 4041460, 6870482, 13740964, 17176205, 34352410, 68704820]

約数ペア:

[(1, 68704820), (2, 34352410), (4, 17176205), (5, 13740964), (10, 6870482), (17, 4041460), (20, 3435241), (34, 2020730), (68, 1010365), (85, 808292), (170, 404146), (340, 202073), (397, 173060), (509, 134980), (794, 86530), (1018, 67490), (1588, 43265), (1985, 34612), (2036, 33745), (2545, 26996), (3970, 17306), (5090, 13498), (6749, 10180), (7940, 8653)]