20908492

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{257}}^1$

素因数の和:358

約数の個数: 36

約数和(自身を含む): 41025096

約数和(自身を除く): 20116604

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 257, 473, 514, 946, 1028, 1849, 1892, 2827, 3698, 5654, 7396, 11051, 11308, 20339, 22102, 40678, 44204, 81356, 121561, 243122, 475193, 486244, 950386, 1900772, 5227123, 10454246, 20908492]

約数ペア:

[(1, 20908492), (2, 10454246), (4, 5227123), (11, 1900772), (22, 950386), (43, 486244), (44, 475193), (86, 243122), (172, 121561), (257, 81356), (473, 44204), (514, 40678), (946, 22102), (1028, 20339), (1849, 11308), (1892, 11051), (2827, 7396), (3698, 5654)]