20039319

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{449}}^1$

素因数の和:509

約数の個数: 40

約数和(自身を含む): 32670000

約数和(自身を除く): 12630681

約数列:

[1, 3, 9, 19, 27, 29, 57, 81, 87, 171, 261, 449, 513, 551, 783, 1347, 1539, 1653, 2349, 4041, 4959, 8531, 12123, 13021, 14877, 25593, 36369, 39063, 44631, 76779, 117189, 230337, 247399, 351567, 691011, 742197, 1054701, 2226591, 6679773, 20039319]

約数ペア:

[(1, 20039319), (3, 6679773), (9, 2226591), (19, 1054701), (27, 742197), (29, 691011), (57, 351567), (81, 247399), (87, 230337), (171, 117189), (261, 76779), (449, 44631), (513, 39063), (551, 36369), (783, 25593), (1347, 14877), (1539, 13021), (1653, 12123), (2349, 8531), (4041, 4959)]