18886399

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{673}}^1$

素因数の和:910

約数の個数: 16

約数和(自身を含む): 22862080

約数和(自身を除く): 3975681

約数列:

[1, 7, 19, 133, 211, 673, 1477, 4009, 4711, 12787, 28063, 89509, 142003, 994021, 2698057, 18886399]

約数ペア:

[(1, 18886399), (7, 2698057), (19, 994021), (133, 142003), (211, 89509), (673, 28063), (1477, 12787), (4009, 4711)]