19779425

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{839}}^1$

素因数の和:913

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 6468895

約数列:

[1, 5, 23, 25, 41, 115, 205, 575, 839, 943, 1025, 4195, 4715, 19297, 20975, 23575, 34399, 96485, 171995, 482425, 791177, 859975, 3955885, 19779425]

約数ペア:

[(1, 19779425), (5, 3955885), (23, 859975), (25, 791177), (41, 482425), (115, 171995), (205, 96485), (575, 34399), (839, 23575), (943, 20975), (1025, 19297), (4195, 4715)]