21260416

素因数分解:

$2^7\times {\mathrm{163}}^1\times {\mathrm{1019}}^1$

素因数の和:1196

約数の個数: 32

約数和(自身を含む): 42656400

約数和(自身を除く): 21395984

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 163, 326, 652, 1019, 1304, 2038, 2608, 4076, 5216, 8152, 10432, 16304, 20864, 32608, 65216, 130432, 166097, 332194, 664388, 1328776, 2657552, 5315104, 10630208, 21260416]

約数ペア:

[(1, 21260416), (2, 10630208), (4, 5315104), (8, 2657552), (16, 1328776), (32, 664388), (64, 332194), (128, 166097), (163, 130432), (326, 65216), (652, 32608), (1019, 20864), (1304, 16304), (2038, 10432), (2608, 8152), (4076, 5216)]