78491260

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{7993}}^1$

素因数の和:8493

約数の個数: 24

約数和(自身を含む): 165188016

約数和(自身を除く): 86696756

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 7993, 9820, 15986, 31972, 39965, 79930, 159860, 3924563, 7849126, 15698252, 19622815, 39245630, 78491260]

約数ペア:

[(1, 78491260), (2, 39245630), (4, 19622815), (5, 15698252), (10, 7849126), (20, 3924563), (491, 159860), (982, 79930), (1964, 39965), (2455, 31972), (4910, 15986), (7993, 9820)]