21393904

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2851}}^1$

素因数の和:2933

約数の個数: 40

約数和(自身を含む): 48096128

約数和(自身を除く): 26702224

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1072, 1876, 2851, 3752, 5702, 7504, 11404, 19957, 22808, 39914, 45616, 79828, 159656, 191017, 319312, 382034, 764068, 1337119, 1528136, 2674238, 3056272, 5348476, 10696952, 21393904]

約数ペア:

[(1, 21393904), (2, 10696952), (4, 5348476), (7, 3056272), (8, 2674238), (14, 1528136), (16, 1337119), (28, 764068), (56, 382034), (67, 319312), (112, 191017), (134, 159656), (268, 79828), (469, 45616), (536, 39914), (938, 22808), (1072, 19957), (1876, 11404), (2851, 7504), (3752, 5702)]