407398

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:243

約数の個数: 16

約数和(自身を含む): 656640

約数和(自身を除く): 249242

約数列:

[1, 2, 19, 38, 71, 142, 151, 302, 1349, 2698, 2869, 5738, 10721, 21442, 203699, 407398]

約数ペア:

[(1, 407398), (2, 203699), (19, 21442), (38, 10721), (71, 5738), (142, 2869), (151, 2698), (302, 1349)]