21258608

素因数分解:

$2^4\times 7^1\times {\mathrm{347}}^1\times {\mathrm{547}}^1$

素因数の和:909

約数の個数: 40

約数和(自身を含む): 47294592

約数和(自身を除く): 26035984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 347, 547, 694, 1094, 1388, 2188, 2429, 2776, 3829, 4376, 4858, 5552, 7658, 8752, 9716, 15316, 19432, 30632, 38864, 61264, 189809, 379618, 759236, 1328663, 1518472, 2657326, 3036944, 5314652, 10629304, 21258608]

約数ペア:

[(1, 21258608), (2, 10629304), (4, 5314652), (7, 3036944), (8, 2657326), (14, 1518472), (16, 1328663), (28, 759236), (56, 379618), (112, 189809), (347, 61264), (547, 38864), (694, 30632), (1094, 19432), (1388, 15316), (2188, 9716), (2429, 8752), (2776, 7658), (3829, 5552), (4376, 4858)]