719829

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{661}}^1$

素因数の和:689

約数の個数: 18

約数和(自身を含む): 1144598

約数和(自身を除く): 424769

約数列:

[1, 3, 9, 11, 33, 99, 121, 363, 661, 1089, 1983, 5949, 7271, 21813, 65439, 79981, 239943, 719829]

約数ペア:

[(1, 719829), (3, 239943), (9, 79981), (11, 65439), (33, 21813), (99, 7271), (121, 5949), (363, 1983), (661, 1089)]