691011

素因数分解:

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

素因数の和:480

約数の個数: 20

約数和(自身を含む): 1089000

約数和(自身を除く): 397989

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 449, 513, 1347, 1539, 4041, 8531, 12123, 25593, 36369, 76779, 230337, 691011]

約数ペア:

[(1, 691011), (3, 230337), (9, 76779), (19, 36369), (27, 25593), (57, 12123), (81, 8531), (171, 4041), (449, 1539), (513, 1347)]