21711490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{499}}^1$

素因数の和:754

約数の個数: 32

約数和(自身を含む): 41400000

約数和(自身を除く): 19688510

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 229, 458, 499, 998, 1145, 2290, 2495, 4351, 4990, 8702, 9481, 18962, 21755, 43510, 47405, 94810, 114271, 228542, 571355, 1142710, 2171149, 4342298, 10855745, 21711490]

約数ペア:

[(1, 21711490), (2, 10855745), (5, 4342298), (10, 2171149), (19, 1142710), (38, 571355), (95, 228542), (190, 114271), (229, 94810), (458, 47405), (499, 43510), (998, 21755), (1145, 18962), (2290, 9481), (2495, 8702), (4351, 4990)]