81357759

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{5791}}^1$

素因数の和:6027

約数の個数: 24

約数和(自身を含む): 134930432

約数和(自身を除く): 53572673

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1561, 2007, 4683, 5791, 14049, 17373, 40537, 52119, 121611, 364833, 1291393, 3874179, 9039751, 11622537, 27119253, 81357759]

約数ペア:

[(1, 81357759), (3, 27119253), (7, 11622537), (9, 9039751), (21, 3874179), (63, 1291393), (223, 364833), (669, 121611), (1561, 52119), (2007, 40537), (4683, 17373), (5791, 14049)]