81272225

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{281}}^1\times {\mathrm{503}}^1$

素因数の和:817

約数の個数: 24

約数和(自身を含む): 105743232

約数和(自身を除く): 24471007

約数列:

[1, 5, 23, 25, 115, 281, 503, 575, 1405, 2515, 6463, 7025, 11569, 12575, 32315, 57845, 141343, 161575, 289225, 706715, 3250889, 3533575, 16254445, 81272225]

約数ペア:

[(1, 81272225), (5, 16254445), (23, 3533575), (25, 3250889), (115, 706715), (281, 289225), (503, 161575), (575, 141343), (1405, 57845), (2515, 32315), (6463, 12575), (7025, 11569)]