12781503

素因数分解:

$3^3\times 7^2\times {\mathrm{9661}}^1$

素因数の和:9684

約数の個数: 24

約数和(自身を含む): 22029360

約数和(自身を除く): 9247857

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 9661, 28983, 67627, 86949, 202881, 260847, 473389, 608643, 1420167, 1825929, 4260501, 12781503]

約数ペア:

[(1, 12781503), (3, 4260501), (7, 1825929), (9, 1420167), (21, 608643), (27, 473389), (49, 260847), (63, 202881), (147, 86949), (189, 67627), (441, 28983), (1323, 9661)]