21682017

素因数分解:

$3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1747}}^1$

素因数の和:1957

約数の個数: 24

約数和(自身を含む): 35994816

約数和(自身を除く): 14312799

約数列:

[1, 3, 7, 9, 21, 63, 197, 591, 1379, 1747, 1773, 4137, 5241, 12229, 12411, 15723, 36687, 110061, 344159, 1032477, 2409113, 3097431, 7227339, 21682017]

約数ペア:

[(1, 21682017), (3, 7227339), (7, 3097431), (9, 2409113), (21, 1032477), (63, 344159), (197, 110061), (591, 36687), (1379, 15723), (1747, 12411), (1773, 12229), (4137, 5241)]