21005286

素因数分解:

$2^1\times 3^1\times {\mathrm{1051}}^1\times {\mathrm{3331}}^1$

素因数の和:4387

約数の個数: 16

約数和(自身を含む): 42063168

約数和(自身を除く): 21057882

約数列:

[1, 2, 3, 6, 1051, 2102, 3153, 3331, 6306, 6662, 9993, 19986, 3500881, 7001762, 10502643, 21005286]

約数ペア:

[(1, 21005286), (2, 10502643), (3, 7001762), (6, 3500881), (1051, 19986), (2102, 9993), (3153, 6662), (3331, 6306)]