21160804

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{5437}}^1$

素因数の和:5587

約数の個数: 24

約数和(自身を含む): 42633920

約数和(自身を除く): 21473116

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 5437, 10874, 21748, 38059, 76118, 152236, 755743, 1511486, 3022972, 5290201, 10580402, 21160804]

約数ペア:

[(1, 21160804), (2, 10580402), (4, 5290201), (7, 3022972), (14, 1511486), (28, 755743), (139, 152236), (278, 76118), (556, 38059), (973, 21748), (1946, 10874), (3892, 5437)]