18880917

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{727}}^1\times {\mathrm{787}}^1$

素因数の和:1528

約数の個数: 16

約数和(自身を含む): 27535872

約数和(自身を除く): 8654955

約数列:

[1, 3, 11, 33, 727, 787, 2181, 2361, 7997, 8657, 23991, 25971, 572149, 1716447, 6293639, 18880917]

約数ペア:

[(1, 18880917), (3, 6293639), (11, 1716447), (33, 572149), (727, 25971), (787, 23991), (2181, 8657), (2361, 7997)]