639248848

素因数分解:

$2^4\times 7^1\times {\mathrm{557}}^1\times {\mathrm{10247}}^1$

素因数の和:10819

約数の個数: 40

約数和(自身を含む): 1418159232

約数和(自身を除く): 778910384

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 557, 1114, 2228, 3899, 4456, 7798, 8912, 10247, 15596, 20494, 31192, 40988, 62384, 71729, 81976, 143458, 163952, 286916, 573832, 1147664, 5707579, 11415158, 22830316, 39953053, 45660632, 79906106, 91321264, 159812212, 319624424, 639248848]

約数ペア:

[(1, 639248848), (2, 319624424), (4, 159812212), (7, 91321264), (8, 79906106), (14, 45660632), (16, 39953053), (28, 22830316), (56, 11415158), (112, 5707579), (557, 1147664), (1114, 573832), (2228, 286916), (3899, 163952), (4456, 143458), (7798, 81976), (8912, 71729), (10247, 62384), (15596, 40988), (20494, 31192)]