20191621149

素因数分解:

$3^2\times 7^2\times {\mathrm{641}}^1\times {\mathrm{71429}}^1$

素因数の和:72090

約数の個数: 36

約数和(自身を含む): 33980822460

約数和(自身を除く): 13789201311

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 641, 1923, 4487, 5769, 13461, 31409, 40383, 71429, 94227, 214287, 282681, 500003, 642861, 1500009, 3500021, 4500027, 10500063, 31500189, 45785989, 137357967, 320501923, 412073901, 961505769, 2243513461, 2884517307, 6730540383, 20191621149]

約数ペア:

[(1, 20191621149), (3, 6730540383), (7, 2884517307), (9, 2243513461), (21, 961505769), (49, 412073901), (63, 320501923), (147, 137357967), (441, 45785989), (641, 31500189), (1923, 10500063), (4487, 4500027), (5769, 3500021), (13461, 1500009), (31409, 642861), (40383, 500003), (71429, 282681), (94227, 214287)]