28019085

素因数分解:

$3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{26309}}^1$

素因数の和:26388

約数の個数: 16

約数和(自身を含む): 45463680

約数和(自身を除く): 17444595

約数列:

[1, 3, 5, 15, 71, 213, 355, 1065, 26309, 78927, 131545, 394635, 1867939, 5603817, 9339695, 28019085]

約数ペア:

[(1, 28019085), (3, 9339695), (5, 5603817), (15, 1867939), (71, 394635), (213, 131545), (355, 78927), (1065, 26309)]