21431883

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{151}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 34933248

約数和(自身を除く): 13501365

約数列:

[1, 3, 11, 17, 23, 33, 51, 69, 121, 151, 187, 253, 363, 391, 453, 561, 759, 1173, 1661, 2057, 2567, 2783, 3473, 4301, 4983, 6171, 7701, 8349, 10419, 12903, 18271, 28237, 38203, 47311, 54813, 59041, 84711, 114609, 141933, 177123, 310607, 420233, 649451, 931821, 1260699, 1948353, 7143961, 21431883]

約数ペア:

[(1, 21431883), (3, 7143961), (11, 1948353), (17, 1260699), (23, 931821), (33, 649451), (51, 420233), (69, 310607), (121, 177123), (151, 141933), (187, 114609), (253, 84711), (363, 59041), (391, 54813), (453, 47311), (561, 38203), (759, 28237), (1173, 18271), (1661, 12903), (2057, 10419), (2567, 8349), (2783, 7701), (3473, 6171), (4301, 4983)]