28580825

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{739}}^1$

素因数の和:786

約数の個数: 48

約数和(自身を含む): 46247040

約数和(自身を除く): 17666215

約数列:

[1, 5, 7, 13, 17, 25, 35, 65, 85, 91, 119, 175, 221, 325, 425, 455, 595, 739, 1105, 1547, 2275, 2975, 3695, 5173, 5525, 7735, 9607, 12563, 18475, 25865, 38675, 48035, 62815, 67249, 87941, 129325, 163319, 240175, 314075, 336245, 439705, 816595, 1143233, 1681225, 2198525, 4082975, 5716165, 28580825]

約数ペア:

[(1, 28580825), (5, 5716165), (7, 4082975), (13, 2198525), (17, 1681225), (25, 1143233), (35, 816595), (65, 439705), (85, 336245), (91, 314075), (119, 240175), (175, 163319), (221, 129325), (325, 87941), (425, 67249), (455, 62815), (595, 48035), (739, 38675), (1105, 25865), (1547, 18475), (2275, 12563), (2975, 9607), (3695, 7735), (5173, 5525)]