20864331

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{17971}}^1$

素因数の和:18023

約数の個数: 16

約数和(自身を含む): 31630720

約数和(自身を除く): 10766389

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 17971, 53913, 161739, 485217, 772753, 2318259, 6954777, 20864331]

約数ペア:

[(1, 20864331), (3, 6954777), (9, 2318259), (27, 772753), (43, 485217), (129, 161739), (387, 53913), (1161, 17971)]