20958861

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{90731}}^1$

素因数の和:90752

約数の個数: 16

約数和(自身を含む): 34841088

約数和(自身を除く): 13882227

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 90731, 272193, 635117, 998041, 1905351, 2994123, 6986287, 20958861]

約数ペア:

[(1, 20958861), (3, 6986287), (7, 2994123), (11, 1905351), (21, 998041), (33, 635117), (77, 272193), (231, 90731)]