81738027

素因数分解:

$3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{2539}}^1$

素因数の和:2632

約数の個数: 36

約数和(自身を含む): 139278360

約数和(自身を除く): 57540333

約数列:

[1, 3, 7, 9, 21, 49, 63, 73, 147, 219, 441, 511, 657, 1533, 2539, 3577, 4599, 7617, 10731, 17773, 22851, 32193, 53319, 124411, 159957, 185347, 373233, 556041, 1119699, 1297429, 1668123, 3892287, 9082003, 11676861, 27246009, 81738027]

約数ペア:

[(1, 81738027), (3, 27246009), (7, 11676861), (9, 9082003), (21, 3892287), (49, 1668123), (63, 1297429), (73, 1119699), (147, 556041), (219, 373233), (441, 185347), (511, 159957), (657, 124411), (1533, 53319), (2539, 32193), (3577, 22851), (4599, 17773), (7617, 10731)]