19290771

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 30067200

約数和(自身を除く): 10776429

約数列:

[1, 3, 9, 27, 29, 71, 87, 213, 261, 347, 639, 783, 1041, 1917, 2059, 3123, 6177, 9369, 10063, 18531, 24637, 30189, 55593, 73911, 90567, 221733, 271701, 665199, 714473, 2143419, 6430257, 19290771]

約数ペア:

[(1, 19290771), (3, 6430257), (9, 2143419), (27, 714473), (29, 665199), (71, 271701), (87, 221733), (213, 90567), (261, 73911), (347, 55593), (639, 30189), (783, 24637), (1041, 18531), (1917, 10063), (2059, 9369), (3123, 6177)]