21261543

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{1181}}^1$

素因数の和:1554

約数の個数: 16

約数和(自身を含む): 30126816

約数和(自身を除く): 8865273

約数列:

[1, 3, 17, 51, 353, 1059, 1181, 3543, 6001, 18003, 20077, 60231, 416893, 1250679, 7087181, 21261543]

約数ペア:

[(1, 21261543), (3, 7087181), (17, 1250679), (51, 416893), (353, 60231), (1059, 20077), (1181, 18003), (3543, 6001)]