28137123

素因数分解:

$3^2\times 7^2\times {\mathrm{63803}}^1$

素因数の和:63823

約数の個数: 18

約数和(自身を含む): 47278764

約数和(自身を除く): 19141641

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 63803, 191409, 446621, 574227, 1339863, 3126347, 4019589, 9379041, 28137123]

約数ペア:

[(1, 28137123), (3, 9379041), (7, 4019589), (9, 3126347), (21, 1339863), (49, 574227), (63, 446621), (147, 191409), (441, 63803)]