161640657

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{487}}^1\times {\mathrm{647}}^1$

素因数の和:1162

約数の個数: 32

約数和(自身を含む): 252979200

約数和(自身を除く): 91338543

約数列:

[1, 3, 9, 19, 27, 57, 171, 487, 513, 647, 1461, 1941, 4383, 5823, 9253, 12293, 13149, 17469, 27759, 36879, 83277, 110637, 249831, 315089, 331911, 945267, 2835801, 5986691, 8507403, 17960073, 53880219, 161640657]

約数ペア:

[(1, 161640657), (3, 53880219), (9, 17960073), (19, 8507403), (27, 5986691), (57, 2835801), (171, 945267), (487, 331911), (513, 315089), (647, 249831), (1461, 110637), (1941, 83277), (4383, 36879), (5823, 27759), (9253, 17469), (12293, 13149)]