21901865

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{659}}^1$

素因数の和:721

約数の個数: 24

約数和(自身を含む): 29177280

約数和(自身を除く): 7275415

約数列:

[1, 5, 17, 23, 85, 115, 289, 391, 659, 1445, 1955, 3295, 6647, 11203, 15157, 33235, 56015, 75785, 190451, 257669, 952255, 1288345, 4380373, 21901865]

約数ペア:

[(1, 21901865), (5, 4380373), (17, 1288345), (23, 952255), (85, 257669), (115, 190451), (289, 75785), (391, 56015), (659, 33235), (1445, 15157), (1955, 11203), (3295, 6647)]