87111980

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{101293}}^1$

素因数の和:101345

約数の個数: 24

約数和(自身を含む): 187191312

約数和(自身を除く): 100079332

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 101293, 202586, 405172, 506465, 1012930, 2025860, 4355599, 8711198, 17422396, 21777995, 43555990, 87111980]

約数ペア:

[(1, 87111980), (2, 43555990), (4, 21777995), (5, 17422396), (10, 8711198), (20, 4355599), (43, 2025860), (86, 1012930), (172, 506465), (215, 405172), (430, 202586), (860, 101293)]