19899873

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{4327}}^1$

素因数の和:4413

約数の個数: 24

約数和(自身を含む): 33308288

約数和(自身を除く): 13408415

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 1533, 4327, 4599, 12981, 30289, 38943, 90867, 272601, 315871, 947613, 2211097, 2842839, 6633291, 19899873]

約数ペア:

[(1, 19899873), (3, 6633291), (7, 2842839), (9, 2211097), (21, 947613), (63, 315871), (73, 272601), (219, 90867), (511, 38943), (657, 30289), (1533, 12981), (4327, 4599)]