81877289

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{593}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 95657760

約数和(自身を除く): 13780471

約数列:

[1, 13, 19, 43, 169, 247, 559, 593, 817, 3211, 7267, 7709, 10621, 11267, 25499, 100217, 138073, 146471, 331487, 484481, 1904123, 4309331, 6298253, 81877289]

約数ペア:

[(1, 81877289), (13, 6298253), (19, 4309331), (43, 1904123), (169, 484481), (247, 331487), (559, 146471), (593, 138073), (817, 100217), (3211, 25499), (7267, 11267), (7709, 10621)]