77804120

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{4513}}^1$

素因数の和:4955

約数の個数: 32

約数和(自身を含む): 175504320

約数和(自身を除く): 97700200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 4513, 8620, 9026, 17240, 18052, 22565, 36104, 45130, 90260, 180520, 1945103, 3890206, 7780412, 9725515, 15560824, 19451030, 38902060, 77804120]

約数ペア:

[(1, 77804120), (2, 38902060), (4, 19451030), (5, 15560824), (8, 9725515), (10, 7780412), (20, 3890206), (40, 1945103), (431, 180520), (862, 90260), (1724, 45130), (2155, 36104), (3448, 22565), (4310, 18052), (4513, 17240), (8620, 9026)]