391288640

素因数分解:

$2^6\times 5^1\times {\mathrm{1222777}}^1$

素因数の和:1222794

約数の個数: 28

約数和(自身を含む): 931756836

約数和(自身を除く): 540468196

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 1222777, 2445554, 4891108, 6113885, 9782216, 12227770, 19564432, 24455540, 39128864, 48911080, 78257728, 97822160, 195644320, 391288640]

約数ペア:

[(1, 391288640), (2, 195644320), (4, 97822160), (5, 78257728), (8, 48911080), (10, 39128864), (16, 24455540), (20, 19564432), (32, 12227770), (40, 9782216), (64, 6113885), (80, 4891108), (160, 2445554), (320, 1222777)]