21084369

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{331}}^1\times {\mathrm{1249}}^1$

素因数の和:1600

約数の個数: 16

約数和(自身を含む): 29880000

約数和(自身を除く): 8795631

約数列:

[1, 3, 17, 51, 331, 993, 1249, 3747, 5627, 16881, 21233, 63699, 413419, 1240257, 7028123, 21084369]

約数ペア:

[(1, 21084369), (3, 7028123), (17, 1240257), (51, 413419), (331, 63699), (993, 21233), (1249, 16881), (3747, 5627)]