21111478

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{2011}}^1$

素因数の和:2223

約数の個数: 16

約数和(自身を含む): 32956560

約数和(自身を除く): 11845082

約数列:

[1, 2, 29, 58, 181, 362, 2011, 4022, 5249, 10498, 58319, 116638, 363991, 727982, 10555739, 21111478]

約数ペア:

[(1, 21111478), (2, 10555739), (29, 727982), (58, 363991), (181, 116638), (362, 58319), (2011, 10498), (4022, 5249)]