16720209

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2963}}^1$

素因数の和:3002

約数の個数: 32

約数和(自身を含む): 28454400

約数和(自身を除く): 11734191

約数列:

[1, 3, 9, 11, 19, 27, 33, 57, 99, 171, 209, 297, 513, 627, 1881, 2963, 5643, 8889, 26667, 32593, 56297, 80001, 97779, 168891, 293337, 506673, 619267, 880011, 1520019, 1857801, 5573403, 16720209]

約数ペア:

[(1, 16720209), (3, 5573403), (9, 1857801), (11, 1520019), (19, 880011), (27, 619267), (33, 506673), (57, 293337), (99, 168891), (171, 97779), (209, 80001), (297, 56297), (513, 32593), (627, 26667), (1881, 8889), (2963, 5643)]