628340

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:451

約数の個数: 24

約数和(自身を含む): 1338120

約数和(自身を除く): 709780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 353, 356, 445, 706, 890, 1412, 1765, 1780, 3530, 7060, 31417, 62834, 125668, 157085, 314170, 628340]

約数ペア:

[(1, 628340), (2, 314170), (4, 157085), (5, 125668), (10, 62834), (20, 31417), (89, 7060), (178, 3530), (353, 1780), (356, 1765), (445, 1412), (706, 890)]