21506817

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{5881}}^1$

素因数の和:5960

約数の個数: 16

約数和(自身を含む): 30492288

約数和(自身を除く): 8985471

約数列:

[1, 3, 23, 53, 69, 159, 1219, 3657, 5881, 17643, 135263, 311693, 405789, 935079, 7168939, 21506817]

約数ペア:

[(1, 21506817), (3, 7168939), (23, 935079), (53, 405789), (69, 311693), (159, 135263), (1219, 17643), (3657, 5881)]