21786884

素因数分解:

$2^2\times 7^1\times {\mathrm{151}}^1\times {\mathrm{5153}}^1$

素因数の和:5315

約数の個数: 24

約数和(自身を含む): 43870848

約数和(自身を除く): 22083964

約数列:

[1, 2, 4, 7, 14, 28, 151, 302, 604, 1057, 2114, 4228, 5153, 10306, 20612, 36071, 72142, 144284, 778103, 1556206, 3112412, 5446721, 10893442, 21786884]

約数ペア:

[(1, 21786884), (2, 10893442), (4, 5446721), (7, 3112412), (14, 1556206), (28, 778103), (151, 144284), (302, 72142), (604, 36071), (1057, 20612), (2114, 10306), (4228, 5153)]