20129725

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{10457}}^1$

素因数の和:10485

約数の個数: 24

約数和(自身を含む): 31123008

約数和(自身を除く): 10993283

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 275, 385, 1925, 10457, 52285, 73199, 115027, 261425, 365995, 575135, 805189, 1829975, 2875675, 4025945, 20129725]

約数ペア:

[(1, 20129725), (5, 4025945), (7, 2875675), (11, 1829975), (25, 805189), (35, 575135), (55, 365995), (77, 261425), (175, 115027), (275, 73199), (385, 52285), (1925, 10457)]