398857280

素因数分解:

$2^6\times 5^1\times {\mathrm{1246429}}^1$

素因数の和:1246446

約数の個数: 28

約数和(自身を含む): 949779660

約数和(自身を除く): 550922380

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1246429, 2492858, 4985716, 6232145, 9971432, 12464290, 19942864, 24928580, 39885728, 49857160, 79771456, 99714320, 199428640, 398857280]

約数ペア:

[(1, 398857280), (2, 199428640), (4, 99714320), (5, 79771456), (8, 49857160), (10, 39885728), (16, 24928580), (20, 19942864), (32, 12464290), (40, 9971432), (64, 6232145), (80, 4985716), (160, 2492858), (320, 1246429)]