21786999

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{4019}}^1$

素因数の和:4174

約数の個数: 16

約数和(自身を含む): 31516800

約数和(自身を除く): 9729801

約数列:

[1, 3, 13, 39, 139, 417, 1807, 4019, 5421, 12057, 52247, 156741, 558641, 1675923, 7262333, 21786999]

約数ペア:

[(1, 21786999), (3, 7262333), (13, 1675923), (39, 558641), (139, 156741), (417, 52247), (1807, 12057), (4019, 5421)]