664841816

素因数分解:

$2^3\times {\mathrm{5197}}^1\times {\mathrm{15991}}^1$

素因数の和:21194

約数の個数: 16

約数和(自身を含む): 1246896240

約数和(自身を除く): 582054424

約数列:

[1, 2, 4, 8, 5197, 10394, 15991, 20788, 31982, 41576, 63964, 127928, 83105227, 166210454, 332420908, 664841816]

約数ペア:

[(1, 664841816), (2, 332420908), (4, 166210454), (8, 83105227), (5197, 127928), (10394, 63964), (15991, 41576), (20788, 31982)]