20913902

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{4751}}^1$

素因数の和:4855

約数の個数: 16

約数和(自身を含む): 32845824

約数和(自身を除く): 11931922

約数列:

[1, 2, 31, 62, 71, 142, 2201, 4402, 4751, 9502, 147281, 294562, 337321, 674642, 10456951, 20913902]

約数ペア:

[(1, 20913902), (2, 10456951), (31, 674642), (62, 337321), (71, 294562), (142, 147281), (2201, 9502), (4402, 4751)]