30831280

素因数分解:

$2^4\times 5^1\times {\mathrm{385391}}^1$

素因数の和:385404

約数の個数: 20

約数和(自身を含む): 71682912

約数和(自身を除く): 40851632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 385391, 770782, 1541564, 1926955, 3083128, 3853910, 6166256, 7707820, 15415640, 30831280]

約数ペア:

[(1, 30831280), (2, 15415640), (4, 7707820), (5, 6166256), (8, 3853910), (10, 3083128), (16, 1926955), (20, 1541564), (40, 770782), (80, 385391)]