21157612

素因数分解:

$2^2\times 7^4\times {\mathrm{2203}}^1$

素因数の和:2235

約数の個数: 30

約数和(自身を含む): 43213828

約数和(自身を除く): 22056216

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 343, 686, 1372, 2203, 2401, 4406, 4802, 8812, 9604, 15421, 30842, 61684, 107947, 215894, 431788, 755629, 1511258, 3022516, 5289403, 10578806, 21157612]

約数ペア:

[(1, 21157612), (2, 10578806), (4, 5289403), (7, 3022516), (14, 1511258), (28, 755629), (49, 431788), (98, 215894), (196, 107947), (343, 61684), (686, 30842), (1372, 15421), (2203, 9604), (2401, 8812), (4406, 4802)]