215681290

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{178249}}^1$

素因数の和:178278

約数の個数: 24

約数和(自身を含む): 426730500

約数和(自身を除く): 211049210

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 121, 242, 605, 1210, 178249, 356498, 891245, 1782490, 1960739, 3921478, 9803695, 19607390, 21568129, 43136258, 107840645, 215681290]

約数ペア:

[(1, 215681290), (2, 107840645), (5, 43136258), (10, 21568129), (11, 19607390), (22, 9803695), (55, 3921478), (110, 1960739), (121, 1782490), (242, 891245), (605, 356498), (1210, 178249)]