20897128

素因数分解:

$2^3\times 7^2\times {\mathrm{53309}}^1$

素因数の和:53329

約数の個数: 24

約数和(自身を含む): 45580050

約数和(自身を除く): 24682922

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392, 53309, 106618, 213236, 373163, 426472, 746326, 1492652, 2612141, 2985304, 5224282, 10448564, 20897128]

約数ペア:

[(1, 20897128), (2, 10448564), (4, 5224282), (7, 2985304), (8, 2612141), (14, 1492652), (28, 746326), (49, 426472), (56, 373163), (98, 213236), (196, 106618), (392, 53309)]