78379720

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{17977}}^1$

素因数の和:18097

約数の個数: 32

約数和(自身を含む): 177982200

約数和(自身を除く): 99602480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 17977, 35954, 71908, 89885, 143816, 179770, 359540, 719080, 1959493, 3918986, 7837972, 9797465, 15675944, 19594930, 39189860, 78379720]

約数ペア:

[(1, 78379720), (2, 39189860), (4, 19594930), (5, 15675944), (8, 9797465), (10, 7837972), (20, 3918986), (40, 1959493), (109, 719080), (218, 359540), (436, 179770), (545, 143816), (872, 89885), (1090, 71908), (2180, 35954), (4360, 17977)]