81178839

素因数分解:

$3^2\times 7^3\times {\mathrm{26297}}^1$

素因数の和:26324

約数の個数: 24

約数和(自身を含む): 136749600

約数和(自身を除く): 55570761

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 343, 441, 1029, 3087, 26297, 78891, 184079, 236673, 552237, 1288553, 1656711, 3865659, 9019871, 11596977, 27059613, 81178839]

約数ペア:

[(1, 81178839), (3, 27059613), (7, 11596977), (9, 9019871), (21, 3865659), (49, 1656711), (63, 1288553), (147, 552237), (343, 236673), (441, 184079), (1029, 78891), (3087, 26297)]