21320045

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1871}}^1$

素因数の和:1972

約数の個数: 16

約数和(自身を含む): 26687232

約数和(自身を除く): 5367187

約数列:

[1, 5, 43, 53, 215, 265, 1871, 2279, 9355, 11395, 80453, 99163, 402265, 495815, 4264009, 21320045]

約数ペア:

[(1, 21320045), (5, 4264009), (43, 495815), (53, 402265), (215, 99163), (265, 80453), (1871, 11395), (2279, 9355)]