28405509

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 42768000

約数和(自身を除く): 14362491

約数列:

[1, 3, 11, 33, 53, 109, 149, 159, 327, 447, 583, 1199, 1639, 1749, 3597, 4917, 5777, 7897, 16241, 17331, 23691, 48723, 63547, 86867, 178651, 190641, 260601, 535953, 860773, 2582319, 9468503, 28405509]

約数ペア:

[(1, 28405509), (3, 9468503), (11, 2582319), (33, 860773), (53, 535953), (109, 260601), (149, 190641), (159, 178651), (327, 86867), (447, 63547), (583, 48723), (1199, 23691), (1639, 17331), (1749, 16241), (3597, 7897), (4917, 5777)]