21989528

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{249881}}^1$

素因数の和:249898

約数の個数: 16

約数和(自身を含む): 44978760

約数和(自身を除く): 22989232

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 249881, 499762, 999524, 1999048, 2748691, 5497382, 10994764, 21989528]

約数ペア:

[(1, 21989528), (2, 10994764), (4, 5497382), (8, 2748691), (11, 1999048), (22, 999524), (44, 499762), (88, 249881)]