831280

素因数分解:

$2^4\times 5^1\times {\mathrm{10391}}^1$

素因数の和:10404

約数の個数: 20

約数和(自身を含む): 1932912

約数和(自身を除く): 1101632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10391, 20782, 41564, 51955, 83128, 103910, 166256, 207820, 415640, 831280]

約数ペア:

[(1, 831280), (2, 415640), (4, 207820), (5, 166256), (8, 103910), (10, 83128), (16, 51955), (20, 41564), (40, 20782), (80, 10391)]