21381657

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{2711}}^1$

素因数の和:2964

約数の個数: 16

約数和(自身を含む): 31242240

約数和(自身を除く): 9860583

約数列:

[1, 3, 11, 33, 239, 717, 2629, 2711, 7887, 8133, 29821, 89463, 647929, 1943787, 7127219, 21381657]

約数ペア:

[(1, 21381657), (3, 7127219), (11, 1943787), (33, 647929), (239, 89463), (717, 29821), (2629, 8133), (2711, 7887)]