21551803

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{5039}}^1$

素因数の和:5106

約数の個数: 16

約数和(自身を含む): 27095040

約数和(自身を除く): 5543237

約数列:

[1, 7, 13, 47, 91, 329, 611, 4277, 5039, 35273, 65507, 236833, 458549, 1657831, 3078829, 21551803]

約数ペア:

[(1, 21551803), (7, 3078829), (13, 1657831), (47, 458549), (91, 236833), (329, 65507), (611, 35273), (4277, 5039)]