18409209

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67433}}^1$

素因数の和:67456

約数の個数: 16

約数和(自身を含む): 30210432

約数和(自身を除く): 11801223

約数列:

[1, 3, 7, 13, 21, 39, 91, 273, 67433, 202299, 472031, 876629, 1416093, 2629887, 6136403, 18409209]

約数ペア:

[(1, 18409209), (3, 6136403), (7, 2629887), (13, 1416093), (21, 876629), (39, 472031), (91, 202299), (273, 67433)]