861620

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{643}}^1$

素因数の和:719

約数の個数: 24

約数和(自身を含む): 1839264

約数和(自身を除く): 977644

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 643, 670, 1286, 1340, 2572, 3215, 6430, 12860, 43081, 86162, 172324, 215405, 430810, 861620]

約数ペア:

[(1, 861620), (2, 430810), (4, 215405), (5, 172324), (10, 86162), (20, 43081), (67, 12860), (134, 6430), (268, 3215), (335, 2572), (643, 1340), (670, 1286)]