20521803

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1\times {\mathrm{883}}^1$

素因数の和:1074

約数の個数: 16

約数和(自身を含む): 28061696

約数和(自身を除く): 7539893

約数列:

[1, 3, 61, 127, 183, 381, 883, 2649, 7747, 23241, 53863, 112141, 161589, 336423, 6840601, 20521803]

約数ペア:

[(1, 20521803), (3, 6840601), (61, 336423), (127, 161589), (183, 112141), (381, 53863), (883, 23241), (2649, 7747)]