28515825

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{9749}}^1$

素因数の和:9778

約数の個数: 36

約数和(自身を含む): 55009500

約数和(自身を除く): 26493675

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 9749, 29247, 48745, 87741, 126737, 146235, 243725, 380211, 438705, 633685, 731175, 1140633, 1901055, 2193525, 3168425, 5703165, 9505275, 28515825]

約数ペア:

[(1, 28515825), (3, 9505275), (5, 5703165), (9, 3168425), (13, 2193525), (15, 1901055), (25, 1140633), (39, 731175), (45, 633685), (65, 438705), (75, 380211), (117, 243725), (195, 146235), (225, 126737), (325, 87741), (585, 48745), (975, 29247), (2925, 9749)]