21011193

素因数分解:

$3^2\times 7^1\times {\mathrm{359}}^1\times {\mathrm{929}}^1$

素因数の和:1301

約数の個数: 24

約数和(自身を含む): 34819200

約数和(自身を除く): 13808007

約数列:

[1, 3, 7, 9, 21, 63, 359, 929, 1077, 2513, 2787, 3231, 6503, 7539, 8361, 19509, 22617, 58527, 333511, 1000533, 2334577, 3001599, 7003731, 21011193]

約数ペア:

[(1, 21011193), (3, 7003731), (7, 3001599), (9, 2334577), (21, 1000533), (63, 333511), (359, 58527), (929, 22617), (1077, 19509), (2513, 8361), (2787, 7539), (3231, 6503)]