31131280

素因数分解:

$2^4\times 5^1\times {\mathrm{389141}}^1$

素因数の和:389154

約数の個数: 20

約数和(自身を含む): 72380412

約数和(自身を除く): 41249132

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389141, 778282, 1556564, 1945705, 3113128, 3891410, 6226256, 7782820, 15565640, 31131280]

約数ペア:

[(1, 31131280), (2, 15565640), (4, 7782820), (5, 6226256), (8, 3891410), (10, 3113128), (16, 1945705), (20, 1556564), (40, 778282), (80, 389141)]