78882940

素因数分解:

$2^2\times 5^1\times {\mathrm{1979}}^1\times {\mathrm{1993}}^1$

素因数の和:3981

約数の個数: 24

約数和(自身を含む): 165821040

約数和(自身を除く): 86938100

約数列:

[1, 2, 4, 5, 10, 20, 1979, 1993, 3958, 3986, 7916, 7972, 9895, 9965, 19790, 19930, 39580, 39860, 3944147, 7888294, 15776588, 19720735, 39441470, 78882940]

約数ペア:

[(1, 78882940), (2, 39441470), (4, 19720735), (5, 15776588), (10, 7888294), (20, 3944147), (1979, 39860), (1993, 39580), (3958, 19930), (3986, 19790), (7916, 9965), (7972, 9895)]