19981856908

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{384266479}}^1$

素因数の和:384266496

約数の個数: 12

約数和(自身を含む): 37658115040

約数和(自身を除く): 17676258132

約数列:

[1, 2, 4, 13, 26, 52, 384266479, 768532958, 1537065916, 4995464227, 9990928454, 19981856908]

約数ペア:

[(1, 19981856908), (2, 9990928454), (4, 4995464227), (13, 1537065916), (26, 768532958), (52, 384266479)]