21048885

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3271}}^1$

素因数の和:3306

約数の個数: 48

約数和(自身を含む): 42876288

約数和(自身を除く): 21827403

約数列:

[1, 3, 5, 9, 11, 13, 15, 33, 39, 45, 55, 65, 99, 117, 143, 165, 195, 429, 495, 585, 715, 1287, 2145, 3271, 6435, 9813, 16355, 29439, 35981, 42523, 49065, 107943, 127569, 147195, 179905, 212615, 323829, 382707, 467753, 539715, 637845, 1403259, 1619145, 1913535, 2338765, 4209777, 7016295, 21048885]

約数ペア:

[(1, 21048885), (3, 7016295), (5, 4209777), (9, 2338765), (11, 1913535), (13, 1619145), (15, 1403259), (33, 637845), (39, 539715), (45, 467753), (55, 382707), (65, 323829), (99, 212615), (117, 179905), (143, 147195), (165, 127569), (195, 107943), (429, 49065), (495, 42523), (585, 35981), (715, 29439), (1287, 16355), (2145, 9813), (3271, 6435)]