21690081

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{14969}}^1$

素因数の和:15005

約数の個数: 24

約数和(自身を含む): 37365120

約数和(自身を除く): 15675039

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 161, 207, 483, 1449, 14969, 44907, 104783, 134721, 314349, 344287, 943047, 1032861, 2410009, 3098583, 7230027, 21690081]

約数ペア:

[(1, 21690081), (3, 7230027), (7, 3098583), (9, 2410009), (21, 1032861), (23, 943047), (63, 344287), (69, 314349), (161, 134721), (207, 104783), (483, 44907), (1449, 14969)]