19978012

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{367}}^1\times {\mathrm{439}}^1$

素因数の和:841

約数の個数: 24

約数和(自身を含む): 36270080

約数和(自身を除く): 16292068

約数列:

[1, 2, 4, 31, 62, 124, 367, 439, 734, 878, 1468, 1756, 11377, 13609, 22754, 27218, 45508, 54436, 161113, 322226, 644452, 4994503, 9989006, 19978012]

約数ペア:

[(1, 19978012), (2, 9989006), (4, 4994503), (31, 644452), (62, 322226), (124, 161113), (367, 54436), (439, 45508), (734, 27218), (878, 22754), (1468, 13609), (1756, 11377)]