20977712

素因数分解:

$2^4\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1193}}^1$

素因数の和:1365

約数の個数: 40

約数和(自身を含む): 46785696

約数和(自身を除く): 25807984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 157, 314, 628, 1099, 1193, 1256, 2198, 2386, 2512, 4396, 4772, 8351, 8792, 9544, 16702, 17584, 19088, 33404, 66808, 133616, 187301, 374602, 749204, 1311107, 1498408, 2622214, 2996816, 5244428, 10488856, 20977712]

約数ペア:

[(1, 20977712), (2, 10488856), (4, 5244428), (7, 2996816), (8, 2622214), (14, 1498408), (16, 1311107), (28, 749204), (56, 374602), (112, 187301), (157, 133616), (314, 66808), (628, 33404), (1099, 19088), (1193, 17584), (1256, 16702), (2198, 9544), (2386, 8792), (2512, 8351), (4396, 4772)]