28348775

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{733}}^1$

素因数の和:780

約数の個数: 48

約数和(自身を含む): 45872064

約数和(自身を除く): 17523289

約数列:

[1, 5, 7, 13, 17, 25, 35, 65, 85, 91, 119, 175, 221, 325, 425, 455, 595, 733, 1105, 1547, 2275, 2975, 3665, 5131, 5525, 7735, 9529, 12461, 18325, 25655, 38675, 47645, 62305, 66703, 87227, 128275, 161993, 238225, 311525, 333515, 436135, 809965, 1133951, 1667575, 2180675, 4049825, 5669755, 28348775]

約数ペア:

[(1, 28348775), (5, 5669755), (7, 4049825), (13, 2180675), (17, 1667575), (25, 1133951), (35, 809965), (65, 436135), (85, 333515), (91, 311525), (119, 238225), (175, 161993), (221, 128275), (325, 87227), (425, 66703), (455, 62305), (595, 47645), (733, 38675), (1105, 25655), (1547, 18325), (2275, 12461), (2975, 9529), (3665, 7735), (5131, 5525)]