21631215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1069}}^1$

素因数の和:1167

約数の個数: 32

約数和(自身を含む): 36979200

約数和(自身を除く): 15347985

約数列:

[1, 3, 5, 15, 19, 57, 71, 95, 213, 285, 355, 1065, 1069, 1349, 3207, 4047, 5345, 6745, 16035, 20235, 20311, 60933, 75899, 101555, 227697, 304665, 379495, 1138485, 1442081, 4326243, 7210405, 21631215]

約数ペア:

[(1, 21631215), (3, 7210405), (5, 4326243), (15, 1442081), (19, 1138485), (57, 379495), (71, 304665), (95, 227697), (213, 101555), (285, 75899), (355, 60933), (1065, 20311), (1069, 20235), (1349, 16035), (3207, 6745), (4047, 5345)]