19969731

素因数分解:

$3^2\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{233}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 29568240

約数和(自身を除く): 9598509

約数列:

[1, 3, 9, 89, 107, 233, 267, 321, 699, 801, 963, 2097, 9523, 20737, 24931, 28569, 62211, 74793, 85707, 186633, 224379, 2218859, 6656577, 19969731]

約数ペア:

[(1, 19969731), (3, 6656577), (9, 2218859), (89, 224379), (107, 186633), (233, 85707), (267, 74793), (321, 62211), (699, 28569), (801, 24931), (963, 20737), (2097, 9523)]