18975775

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:488

約数の個数: 48

約数和(自身を含む): 30553600

約数和(自身を除く): 11577825

約数列:

[1, 5, 7, 13, 19, 25, 35, 65, 91, 95, 133, 175, 247, 325, 439, 455, 475, 665, 1235, 1729, 2195, 2275, 3073, 3325, 5707, 6175, 8341, 8645, 10975, 15365, 28535, 39949, 41705, 43225, 58387, 76825, 108433, 142675, 199745, 208525, 291935, 542165, 759031, 998725, 1459675, 2710825, 3795155, 18975775]

約数ペア:

[(1, 18975775), (5, 3795155), (7, 2710825), (13, 1459675), (19, 998725), (25, 759031), (35, 542165), (65, 291935), (91, 208525), (95, 199745), (133, 142675), (175, 108433), (247, 76825), (325, 58387), (439, 43225), (455, 41705), (475, 39949), (665, 28535), (1235, 15365), (1729, 10975), (2195, 8645), (2275, 8341), (3073, 6175), (3325, 5707)]