19997419

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1423}}^1$

素因数の和:1506

約数の個数: 16

約数和(自身を含む): 22966272

約数和(自身を除く): 2968853

約数列:

[1, 13, 23, 47, 299, 611, 1081, 1423, 14053, 18499, 32729, 66881, 425477, 869453, 1538263, 19997419]

約数ペア:

[(1, 19997419), (13, 1538263), (23, 869453), (47, 425477), (299, 66881), (611, 32729), (1081, 18499), (1423, 14053)]