406665

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{1291}}^1$

素因数の和:1309

約数の個数: 24

約数和(自身を含む): 806208

約数和(自身を除く): 399543

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 1291, 3873, 6455, 9037, 11619, 19365, 27111, 45185, 58095, 81333, 135555, 406665]

約数ペア:

[(1, 406665), (3, 135555), (5, 81333), (7, 58095), (9, 45185), (15, 27111), (21, 19365), (35, 11619), (45, 9037), (63, 6455), (105, 3873), (315, 1291)]