21129252

素因数分解:

$2^2\times 3^1\times {\mathrm{131}}^1\times {\mathrm{13441}}^1$

素因数の和:13579

約数の個数: 24

約数和(自身を含む): 49681632

約数和(自身を除く): 28552380

約数列:

[1, 2, 3, 4, 6, 12, 131, 262, 393, 524, 786, 1572, 13441, 26882, 40323, 53764, 80646, 161292, 1760771, 3521542, 5282313, 7043084, 10564626, 21129252]

約数ペア:

[(1, 21129252), (2, 10564626), (3, 7043084), (4, 5282313), (6, 3521542), (12, 1760771), (131, 161292), (262, 80646), (393, 53764), (524, 40323), (786, 26882), (1572, 13441)]