81904815

素因数分解:

$3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{21929}}^1$

素因数の和:22023

約数の個数: 24

約数和(自身を含む): 143685360

約数和(自身を除く): 61780545

約数列:

[1, 3, 5, 9, 15, 45, 83, 249, 415, 747, 1245, 3735, 21929, 65787, 109645, 197361, 328935, 986805, 1820107, 5460321, 9100535, 16380963, 27301605, 81904815]

約数ペア:

[(1, 81904815), (3, 27301605), (5, 16380963), (9, 9100535), (15, 5460321), (45, 1820107), (83, 986805), (249, 328935), (415, 197361), (747, 109645), (1245, 65787), (3735, 21929)]