221378079

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{43331}}^1$

素因数の和:43478

約数の個数: 16

約数和(自身を含む): 320310144

約数和(自身を除く): 98932065

約数列:

[1, 3, 13, 39, 131, 393, 1703, 5109, 43331, 129993, 563303, 1689909, 5676361, 17029083, 73792693, 221378079]

約数ペア:

[(1, 221378079), (3, 73792693), (13, 17029083), (39, 5676361), (131, 1689909), (393, 563303), (1703, 129993), (5109, 43331)]