19705825

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{797}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 26123328

約数和(自身を除く): 6417503

約数列:

[1, 5, 23, 25, 43, 115, 215, 575, 797, 989, 1075, 3985, 4945, 18331, 19925, 24725, 34271, 91655, 171355, 458275, 788233, 856775, 3941165, 19705825]

約数ペア:

[(1, 19705825), (5, 3941165), (23, 856775), (25, 788233), (43, 458275), (115, 171355), (215, 91655), (575, 34271), (797, 24725), (989, 19925), (1075, 18331), (3985, 4945)]