21376779

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{199}}^1\times {\mathrm{587}}^1$

素因数の和:850

約数の個数: 16

約数和(自身を含む): 29164800

約数和(自身を除く): 7788021

約数列:

[1, 3, 61, 183, 199, 587, 597, 1761, 12139, 35807, 36417, 107421, 116813, 350439, 7125593, 21376779]

約数ペア:

[(1, 21376779), (3, 7125593), (61, 350439), (183, 116813), (199, 107421), (587, 36417), (597, 35807), (1761, 12139)]