1900815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{421}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 3565056

約数和(自身を除く): 1664241

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 421, 645, 903, 1263, 1505, 2105, 2947, 4515, 6315, 8841, 14735, 18103, 44205, 54309, 90515, 126721, 271545, 380163, 633605, 1900815]

約数ペア:

[(1, 1900815), (3, 633605), (5, 380163), (7, 271545), (15, 126721), (21, 90515), (35, 54309), (43, 44205), (105, 18103), (129, 14735), (215, 8841), (301, 6315), (421, 4515), (645, 2947), (903, 2105), (1263, 1505)]