21991306790

素因数分解:

$2^1\times 5^1\times {\mathrm{4519}}^1\times {\mathrm{486641}}^1$

素因数の和:491167

約数の個数: 16

約数和(自身を含む): 39593193120

約数和(自身を除く): 17601886330

約数列:

[1, 2, 5, 10, 4519, 9038, 22595, 45190, 486641, 973282, 2433205, 4866410, 2199130679, 4398261358, 10995653395, 21991306790]

約数ペア:

[(1, 21991306790), (2, 10995653395), (5, 4398261358), (10, 2199130679), (4519, 4866410), (9038, 2433205), (22595, 973282), (45190, 486641)]