21388806

素因数分解:

$2^1\times 3^3\times {\mathrm{431}}^1\times {\mathrm{919}}^1$

素因数の和:1361

約数の個数: 32

約数和(自身を含む): 47692800

約数和(自身を除く): 26303994

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 431, 862, 919, 1293, 1838, 2586, 2757, 3879, 5514, 7758, 8271, 11637, 16542, 23274, 24813, 49626, 396089, 792178, 1188267, 2376534, 3564801, 7129602, 10694403, 21388806]

約数ペア:

[(1, 21388806), (2, 10694403), (3, 7129602), (6, 3564801), (9, 2376534), (18, 1188267), (27, 792178), (54, 396089), (431, 49626), (862, 24813), (919, 23274), (1293, 16542), (1838, 11637), (2586, 8271), (2757, 7758), (3879, 5514)]