20561681

素因数分解:

$7^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1\times {\mathrm{229}}^1$

素因数の和:464

約数の個数: 16

約数和(自身を含む): 24023040

約数和(自身を除く): 3461359

約数列:

[1, 7, 101, 127, 229, 707, 889, 1603, 12827, 23129, 29083, 89789, 161903, 203581, 2937383, 20561681]

約数ペア:

[(1, 20561681), (7, 2937383), (101, 203581), (127, 161903), (229, 89789), (707, 29083), (889, 23129), (1603, 12827)]