20811681

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{887}}^1$

素因数の和:986

約数の個数: 32

約数和(自身を含む): 34099200

約数和(自身を除く): 13287519

約数列:

[1, 3, 9, 11, 27, 33, 79, 99, 237, 297, 711, 869, 887, 2133, 2607, 2661, 7821, 7983, 9757, 23463, 23949, 29271, 70073, 87813, 210219, 263439, 630657, 770803, 1891971, 2312409, 6937227, 20811681]

約数ペア:

[(1, 20811681), (3, 6937227), (9, 2312409), (11, 1891971), (27, 770803), (33, 630657), (79, 263439), (99, 210219), (237, 87813), (297, 70073), (711, 29271), (869, 23949), (887, 23463), (2133, 9757), (2607, 7983), (2661, 7821)]