661221.0000000

素因数分解:

$3^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{463}}^1$

素因数の和:504

約数の個数: 36

約数和(自身を含む): 11231584

約数和(自身を除く): 4676893

約数列:

[1, 3, 9, 11, 13, 33, 39, 99, 117, 121, 143, 363, 429, 463, 1089, 1287, 1389, 1573, 4167, 4719, 5093, 6019, 14157, 15279, 18057, 45837, 54171, 56023, 66209, 168069, 198627, 504207, 595881, 728299, 2184897, 6554691]

約数ペア:

[(1, 6554691), (3, 2184897), (9, 728299), (11, 595881), (13, 504207), (33, 198627), (39, 168069), (99, 66209), (117, 56023), (121, 54171), (143, 45837), (363, 18057), (429, 15279), (463, 14157), (1089, 6019), (1287, 5093), (1389, 4719), (1573, 4167)]