21691111

素因数分解:

${\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:462

約数の個数: 16

約数和(自身を含む): 24127488

約数和(自身を除く): 2436377

約数列:

[1, 13, 47, 131, 271, 611, 1703, 3523, 6157, 12737, 35501, 80041, 165581, 461513, 1668547, 21691111]

約数ペア:

[(1, 21691111), (13, 1668547), (47, 461513), (131, 165581), (271, 80041), (611, 35501), (1703, 12737), (3523, 6157)]