19955559

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{22247}}^1$

素因数の和:22286

約数の個数: 16

約数和(自身を含む): 29901312

約数和(自身を除く): 9945753

約数列:

[1, 3, 13, 23, 39, 69, 299, 897, 22247, 66741, 289211, 511681, 867633, 1535043, 6651853, 19955559]

約数ペア:

[(1, 19955559), (3, 6651853), (13, 1535043), (23, 867633), (39, 511681), (69, 289211), (299, 66741), (897, 22247)]