20137842921

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{20403083}}^1$

素因数の和:20403140

約数の個数: 16

約数和(自身を含む): 31339137024

約数和(自身を除く): 11201294103

約数列:

[1, 3, 7, 21, 47, 141, 329, 987, 20403083, 61209249, 142821581, 428464743, 958944901, 2876834703, 6712614307, 20137842921]

約数ペア:

[(1, 20137842921), (3, 6712614307), (7, 2876834703), (21, 958944901), (47, 428464743), (141, 142821581), (329, 61209249), (987, 20403083)]