19996775

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{419}}^1$

素因数の和:535

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 6251545

約数列:

[1, 5, 23, 25, 83, 115, 415, 419, 575, 1909, 2075, 2095, 9545, 9637, 10475, 34777, 47725, 48185, 173885, 240925, 799871, 869425, 3999355, 19996775]

約数ペア:

[(1, 19996775), (5, 3999355), (23, 869425), (25, 799871), (83, 240925), (115, 173885), (415, 48185), (419, 47725), (575, 34777), (1909, 10475), (2075, 9637), (2095, 9545)]