20985502

素因数分解:

$2^1\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{1999}}^1$

素因数の和:2211

約数の個数: 16

約数和(自身を含む): 32760000

約数和(自身を除く): 11774498

約数列:

[1, 2, 29, 58, 181, 362, 1999, 3998, 5249, 10498, 57971, 115942, 361819, 723638, 10492751, 20985502]

約数ペア:

[(1, 20985502), (2, 10492751), (29, 723638), (58, 361819), (181, 115942), (362, 57971), (1999, 10498), (3998, 5249)]