19706864

素因数分解:

$2^4\times {\mathrm{139}}^1\times {\mathrm{8861}}^1$

素因数の和:9008

約数の個数: 20

約数和(自身を含む): 38461080

約数和(自身を除く): 18754216

約数列:

[1, 2, 4, 8, 16, 139, 278, 556, 1112, 2224, 8861, 17722, 35444, 70888, 141776, 1231679, 2463358, 4926716, 9853432, 19706864]

約数ペア:

[(1, 19706864), (2, 9853432), (4, 4926716), (8, 2463358), (16, 1231679), (139, 141776), (278, 70888), (556, 35444), (1112, 17722), (2224, 8861)]