81691869

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{19163}}^1$

素因数の和:19209

約数の個数: 24

約数和(自身を含む): 131081760

約数和(自身を除く): 49389891

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4263, 19163, 57489, 134141, 402423, 555727, 938987, 1667181, 2816961, 3890089, 11670267, 27230623, 81691869]

約数ペア:

[(1, 81691869), (3, 27230623), (7, 11670267), (21, 3890089), (29, 2816961), (49, 1667181), (87, 938987), (147, 555727), (203, 402423), (609, 134141), (1421, 57489), (4263, 19163)]