21084315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1279}}^1$

素因数の和:1451

約数の個数: 32

約数和(自身を含む): 38830080

約数和(自身を除く): 17745765

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 157, 471, 785, 1099, 1279, 2355, 3297, 3837, 5495, 6395, 8953, 16485, 19185, 26859, 44765, 134295, 200803, 602409, 1004015, 1405621, 3012045, 4216863, 7028105, 21084315]

約数ペア:

[(1, 21084315), (3, 7028105), (5, 4216863), (7, 3012045), (15, 1405621), (21, 1004015), (35, 602409), (105, 200803), (157, 134295), (471, 44765), (785, 26859), (1099, 19185), (1279, 16485), (2355, 8953), (3297, 6395), (3837, 5495)]