31262840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{111653}}^1$

素因数の和:111671

約数の個数: 32

約数和(自身を含む): 80390880

約数和(自身を除く): 49128040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 111653, 223306, 446612, 558265, 781571, 893224, 1116530, 1563142, 2233060, 3126284, 3907855, 4466120, 6252568, 7815710, 15631420, 31262840]

約数ペア:

[(1, 31262840), (2, 15631420), (4, 7815710), (5, 6252568), (7, 4466120), (8, 3907855), (10, 3126284), (14, 2233060), (20, 1563142), (28, 1116530), (35, 893224), (40, 781571), (56, 558265), (70, 446612), (140, 223306), (280, 111653)]