1338944991

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{215507}}^1$

素因数の和:215638

約数の個数: 16

約数和(自身を含む): 1896470400

約数和(自身を除く): 557525409

約数列:

[1, 3, 19, 57, 109, 327, 2071, 6213, 215507, 646521, 4094633, 12283899, 23490263, 70470789, 446314997, 1338944991]

約数ペア:

[(1, 1338944991), (3, 446314997), (19, 70470789), (57, 23490263), (109, 12283899), (327, 4094633), (2071, 646521), (6213, 215507)]