21381948

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{28283}}^1$

素因数の和:28303

約数の個数: 48

約数和(自身を含む): 63356160

約数和(自身を除く): 41974212

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 28283, 56566, 84849, 113132, 169698, 197981, 254547, 339396, 395962, 509094, 593943, 763641, 791924, 1018188, 1187886, 1527282, 1781829, 2375772, 3054564, 3563658, 5345487, 7127316, 10690974, 21381948]

約数ペア:

[(1, 21381948), (2, 10690974), (3, 7127316), (4, 5345487), (6, 3563658), (7, 3054564), (9, 2375772), (12, 1781829), (14, 1527282), (18, 1187886), (21, 1018188), (27, 791924), (28, 763641), (36, 593943), (42, 509094), (54, 395962), (63, 339396), (84, 254547), (108, 197981), (126, 169698), (189, 113132), (252, 84849), (378, 56566), (756, 28283)]