21788577

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{8377}}^1$

素因数の和:8417

約数の個数: 18

約数和(自身を含む): 33436598

約数和(自身を除く): 11648021

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 8377, 25131, 75393, 142409, 427227, 1281681, 2420953, 7262859, 21788577]

約数ペア:

[(1, 21788577), (3, 7262859), (9, 2420953), (17, 1281681), (51, 427227), (153, 142409), (289, 75393), (867, 25131), (2601, 8377)]