20975668

素因数分解:

$2^2\times 7^1\times {\mathrm{97}}^1\times {\mathrm{7723}}^1$

素因数の和:7831

約数の個数: 24

約数和(自身を含む): 42389312

約数和(自身を除く): 21413644

約数列:

[1, 2, 4, 7, 14, 28, 97, 194, 388, 679, 1358, 2716, 7723, 15446, 30892, 54061, 108122, 216244, 749131, 1498262, 2996524, 5243917, 10487834, 20975668]

約数ペア:

[(1, 20975668), (2, 10487834), (4, 5243917), (7, 2996524), (14, 1498262), (28, 749131), (97, 216244), (194, 108122), (388, 54061), (679, 30892), (1358, 15446), (2716, 7723)]