210944975

素因数分解:

$5^2\times {\mathrm{109}}^1\times {\mathrm{199}}^1\times {\mathrm{389}}^1$

素因数の和:707

約数の個数: 24

約数和(自身を含む): 265980000

約数和(自身を除く): 55035025

約数列:

[1, 5, 25, 109, 199, 389, 545, 995, 1945, 2725, 4975, 9725, 21691, 42401, 77411, 108455, 212005, 387055, 542275, 1060025, 1935275, 8437799, 42188995, 210944975]

約数ペア:

[(1, 210944975), (5, 42188995), (25, 8437799), (109, 1935275), (199, 1060025), (389, 542275), (545, 387055), (995, 212005), (1945, 108455), (2725, 77411), (4975, 42401), (9725, 21691)]