21017763

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{10567}}^1$

素因数の和:10603

約数の個数: 24

約数和(自身を含む): 34620768

約数和(自身を除く): 13603005

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 10567, 31701, 95103, 137371, 179639, 412113, 538917, 1236339, 1616751, 2335307, 7005921, 21017763]

約数ペア:

[(1, 21017763), (3, 7005921), (9, 2335307), (13, 1616751), (17, 1236339), (39, 538917), (51, 412113), (117, 179639), (153, 137371), (221, 95103), (663, 31701), (1989, 10567)]