20869835

素因数分解:

$5^1\times 7^3\times {\mathrm{43}}^1\times {\mathrm{283}}^1$

素因数の和:352

約数の個数: 32

約数和(自身を含む): 29990400

約数和(自身を除く): 9120565

約数列:

[1, 5, 7, 35, 43, 49, 215, 245, 283, 301, 343, 1415, 1505, 1715, 1981, 2107, 9905, 10535, 12169, 13867, 14749, 60845, 69335, 73745, 85183, 97069, 425915, 485345, 596281, 2981405, 4173967, 20869835]

約数ペア:

[(1, 20869835), (5, 4173967), (7, 2981405), (35, 596281), (43, 485345), (49, 425915), (215, 97069), (245, 85183), (283, 73745), (301, 69335), (343, 60845), (1415, 14749), (1505, 13867), (1715, 12169), (1981, 10535), (2107, 9905)]