21854492

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{11551}}^1$

素因数の和:11609

約数の個数: 24

約数和(自身を含む): 42696192

約数和(自身を除く): 20841700

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 473, 946, 1892, 11551, 23102, 46204, 127061, 254122, 496693, 508244, 993386, 1986772, 5463623, 10927246, 21854492]

約数ペア:

[(1, 21854492), (2, 10927246), (4, 5463623), (11, 1986772), (22, 993386), (43, 508244), (44, 496693), (86, 254122), (172, 127061), (473, 46204), (946, 23102), (1892, 11551)]