208861820

素因数分解:

$2^2\times 5^1\times {\mathrm{797}}^1\times {\mathrm{13103}}^1$

素因数の和:13909

約数の個数: 24

約数和(自身を含む): 439193664

約数和(自身を除く): 230331844

約数列:

[1, 2, 4, 5, 10, 20, 797, 1594, 3188, 3985, 7970, 13103, 15940, 26206, 52412, 65515, 131030, 262060, 10443091, 20886182, 41772364, 52215455, 104430910, 208861820]

約数ペア:

[(1, 208861820), (2, 104430910), (4, 52215455), (5, 41772364), (10, 20886182), (20, 10443091), (797, 262060), (1594, 131030), (3188, 65515), (3985, 52412), (7970, 26206), (13103, 15940)]