128912847

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1\times {\mathrm{661}}^1$

素因数の和:959

約数の個数: 32

約数和(自身を含む): 202857984

約数和(自身を除く): 73945137

約数列:

[1, 3, 7, 21, 37, 111, 251, 259, 661, 753, 777, 1757, 1983, 4627, 5271, 9287, 13881, 24457, 27861, 65009, 73371, 165911, 171199, 195027, 497733, 513597, 1161377, 3484131, 6138707, 18416121, 42970949, 128912847]

約数ペア:

[(1, 128912847), (3, 42970949), (7, 18416121), (21, 6138707), (37, 3484131), (111, 1161377), (251, 513597), (259, 497733), (661, 195027), (753, 171199), (777, 165911), (1757, 73371), (1983, 65009), (4627, 27861), (5271, 24457), (9287, 13881)]