81717725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{4091}}^1$

素因数の和:4165

約数の個数: 24

約数和(自身を含む): 109600128

約数和(自身を除く): 27882403

約数列:

[1, 5, 17, 25, 47, 85, 235, 425, 799, 1175, 3995, 4091, 19975, 20455, 69547, 102275, 192277, 347735, 961385, 1738675, 3268709, 4806925, 16343545, 81717725]

約数ペア:

[(1, 81717725), (5, 16343545), (17, 4806925), (25, 3268709), (47, 1738675), (85, 961385), (235, 347735), (425, 192277), (799, 102275), (1175, 69547), (3995, 20455), (4091, 19975)]