78312140

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{35923}}^1$

素因数の和:36041

約数の個数: 24

約数和(自身を含む): 165968880

約数和(自身を除く): 87656740

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 35923, 71846, 143692, 179615, 359230, 718460, 3915607, 7831214, 15662428, 19578035, 39156070, 78312140]

約数ペア:

[(1, 78312140), (2, 39156070), (4, 19578035), (5, 15662428), (10, 7831214), (20, 3915607), (109, 718460), (218, 359230), (436, 179615), (545, 143692), (1090, 71846), (2180, 35923)]