19905207

素因数分解:

$3^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{5479}}^1$

素因数の和:5662

約数の個数: 16

約数和(自身を含む): 30512640

約数和(自身を除く): 10607433

約数列:

[1, 3, 7, 21, 173, 519, 1211, 3633, 5479, 16437, 38353, 115059, 947867, 2843601, 6635069, 19905207]

約数ペア:

[(1, 19905207), (3, 6635069), (7, 2843601), (21, 947867), (173, 115059), (519, 38353), (1211, 16437), (3633, 5479)]