20895777

素因数分解:

$3^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{7057}}^1$

素因数の和:7117

約数の個数: 24

約数和(自身を含む): 35233536

約数和(自身を除く): 14337759

約数列:

[1, 3, 7, 9, 21, 47, 63, 141, 329, 423, 987, 2961, 7057, 21171, 49399, 63513, 148197, 331679, 444591, 995037, 2321753, 2985111, 6965259, 20895777]

約数ペア:

[(1, 20895777), (3, 6965259), (7, 2985111), (9, 2321753), (21, 995037), (47, 444591), (63, 331679), (141, 148197), (329, 63513), (423, 49399), (987, 21171), (2961, 7057)]