21067813

素因数分解:

${\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:372

約数の個数: 16

約数和(自身を含む): 23284800

約数和(自身を除く): 2216987

約数列:

[1, 13, 89, 131, 139, 1157, 1703, 1807, 11659, 12371, 18209, 151567, 160823, 236717, 1620601, 21067813]

約数ペア:

[(1, 21067813), (13, 1620601), (89, 236717), (131, 160823), (139, 151567), (1157, 18209), (1703, 12371), (1807, 11659)]