21013221369

素因数分解:

$3^1\times 7^1\times {\mathrm{4177}}^1\times {\mathrm{239557}}^1$

素因数の和:243744

約数の個数: 16

約数和(自身を含む): 32027946368

約数和(自身を除く): 11014724999

約数列:

[1, 3, 7, 21, 4177, 12531, 29239, 87717, 239557, 718671, 1676899, 5030697, 1000629589, 3001888767, 7004407123, 21013221369]

約数ペア:

[(1, 21013221369), (3, 7004407123), (7, 3001888767), (21, 1000629589), (4177, 5030697), (12531, 1676899), (29239, 718671), (87717, 239557)]