20878228

素因数分解:

$2^2\times 7^1\times {\mathrm{739}}^1\times {\mathrm{1009}}^1$

素因数の和:1759

約数の個数: 24

約数和(自身を含む): 41854400

約数和(自身を除く): 20976172

約数列:

[1, 2, 4, 7, 14, 28, 739, 1009, 1478, 2018, 2956, 4036, 5173, 7063, 10346, 14126, 20692, 28252, 745651, 1491302, 2982604, 5219557, 10439114, 20878228]

約数ペア:

[(1, 20878228), (2, 10439114), (4, 5219557), (7, 2982604), (14, 1491302), (28, 745651), (739, 28252), (1009, 20692), (1478, 14126), (2018, 10346), (2956, 7063), (4036, 5173)]