18720656

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{19181}}^1$

素因数の和:19250

約数の個数: 20

約数和(自身を含む): 36867804

約数和(自身を除く): 18147148

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 19181, 38362, 76724, 153448, 306896, 1170041, 2340082, 4680164, 9360328, 18720656]

約数ペア:

[(1, 18720656), (2, 9360328), (4, 4680164), (8, 2340082), (16, 1170041), (61, 306896), (122, 153448), (244, 76724), (488, 38362), (976, 19181)]