18955948

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{43}}^2\times {\mathrm{233}}^1$

素因数の和:334

約数の個数: 36

約数和(自身を含む): 37208808

約数和(自身を除く): 18252860

約数列:

[1, 2, 4, 11, 22, 43, 44, 86, 172, 233, 466, 473, 932, 946, 1849, 1892, 2563, 3698, 5126, 7396, 10019, 10252, 20038, 20339, 40076, 40678, 81356, 110209, 220418, 430817, 440836, 861634, 1723268, 4738987, 9477974, 18955948]

約数ペア:

[(1, 18955948), (2, 9477974), (4, 4738987), (11, 1723268), (22, 861634), (43, 440836), (44, 430817), (86, 220418), (172, 110209), (233, 81356), (466, 40678), (473, 40076), (932, 20339), (946, 20038), (1849, 10252), (1892, 10019), (2563, 7396), (3698, 5126)]