21447125

素因数分解:

$5^3\times 7^1\times {\mathrm{127}}^1\times {\mathrm{193}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 30990336

約数和(自身を除く): 9543211

約数列:

[1, 5, 7, 25, 35, 125, 127, 175, 193, 635, 875, 889, 965, 1351, 3175, 4445, 4825, 6755, 15875, 22225, 24125, 24511, 33775, 111125, 122555, 168875, 171577, 612775, 857885, 3063875, 4289425, 21447125]

約数ペア:

[(1, 21447125), (5, 4289425), (7, 3063875), (25, 857885), (35, 612775), (125, 171577), (127, 168875), (175, 122555), (193, 111125), (635, 33775), (875, 24511), (889, 24125), (965, 22225), (1351, 15875), (3175, 6755), (4445, 4825)]