20711763

素因数分解:

$3^2\times {\mathrm{17}}^2\times {\mathrm{7963}}^1$

素因数の和:8003

約数の個数: 18

約数和(自身を含む): 31784324

約数和(自身を除く): 11072561

約数列:

[1, 3, 9, 17, 51, 153, 289, 867, 2601, 7963, 23889, 71667, 135371, 406113, 1218339, 2301307, 6903921, 20711763]

約数ペア:

[(1, 20711763), (3, 6903921), (9, 2301307), (17, 1218339), (51, 406113), (153, 135371), (289, 71667), (867, 23889), (2601, 7963)]