21571912

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{158617}}^1$

素因数の和:158640

約数の個数: 16

約数和(自身を含む): 42826860

約数和(自身を除く): 21254948

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 158617, 317234, 634468, 1268936, 2696489, 5392978, 10785956, 21571912]

約数ペア:

[(1, 21571912), (2, 10785956), (4, 5392978), (8, 2696489), (17, 1268936), (34, 634468), (68, 317234), (136, 158617)]