400000047

素因数分解:

$3^1\times {\mathrm{157}}^1\times {\mathrm{173}}^1\times {\mathrm{4909}}^1$

素因数の和:5242

約数の個数: 16

約数和(自身を含む): 539942880

約数和(自身を除く): 139942833

約数列:

[1, 3, 157, 173, 471, 519, 4909, 14727, 27161, 81483, 770713, 849257, 2312139, 2547771, 133333349, 400000047]

約数ペア:

[(1, 400000047), (3, 133333349), (157, 2547771), (173, 2312139), (471, 849257), (519, 770713), (4909, 81483), (14727, 27161)]