78404545

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{191}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 103680000

約数和(自身を除く): 25275455

約数列:

[1, 5, 19, 29, 95, 145, 149, 191, 551, 745, 955, 2755, 2831, 3629, 4321, 5539, 14155, 18145, 21605, 27695, 28459, 82099, 105241, 142295, 410495, 526205, 540721, 825311, 2703605, 4126555, 15680909, 78404545]

約数ペア:

[(1, 78404545), (5, 15680909), (19, 4126555), (29, 2703605), (95, 825311), (145, 540721), (149, 526205), (191, 410495), (551, 142295), (745, 105241), (955, 82099), (2755, 28459), (2831, 27695), (3629, 21605), (4321, 18145), (5539, 14155)]