21817107

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{20719}}^1$

素因数の和:20744

約数の個数: 20

約数和(自身を含む): 35099680

約数和(自身を除く): 13282573

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 20719, 62157, 186471, 269347, 559413, 808041, 1678239, 2424123, 7272369, 21817107]

約数ペア:

[(1, 21817107), (3, 7272369), (9, 2424123), (13, 1678239), (27, 808041), (39, 559413), (81, 269347), (117, 186471), (351, 62157), (1053, 20719)]