638798408

素因数分解:

$2^3\times {\mathrm{139}}^1\times {\mathrm{397}}^1\times {\mathrm{1447}}^1$

素因数の和:1989

約数の個数: 32

約数和(自身を含む): 1210238400

約数和(自身を除く): 571439992

約数列:

[1, 2, 4, 8, 139, 278, 397, 556, 794, 1112, 1447, 1588, 2894, 3176, 5788, 11576, 55183, 110366, 201133, 220732, 402266, 441464, 574459, 804532, 1148918, 1609064, 2297836, 4595672, 79849801, 159699602, 319399204, 638798408]

約数ペア:

[(1, 638798408), (2, 319399204), (4, 159699602), (8, 79849801), (139, 4595672), (278, 2297836), (397, 1609064), (556, 1148918), (794, 804532), (1112, 574459), (1447, 441464), (1588, 402266), (2894, 220732), (3176, 201133), (5788, 110366), (11576, 55183)]