18216991

素因数分解:

${\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{563}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 20845440

約数和(自身を除く): 2628449

約数列:

[1, 13, 19, 131, 247, 563, 1703, 2489, 7319, 10697, 32357, 73753, 139061, 958789, 1401307, 18216991]

約数ペア:

[(1, 18216991), (13, 1401307), (19, 958789), (131, 139061), (247, 73753), (563, 32357), (1703, 10697), (2489, 7319)]