28695340

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{13163}}^1$

素因数の和:13281

約数の個数: 24

約数和(自身を含む): 60817680

約数和(自身を除く): 32122340

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 13163, 26326, 52652, 65815, 131630, 263260, 1434767, 2869534, 5739068, 7173835, 14347670, 28695340]

約数ペア:

[(1, 28695340), (2, 14347670), (4, 7173835), (5, 5739068), (10, 2869534), (20, 1434767), (109, 263260), (218, 131630), (436, 65815), (545, 52652), (1090, 26326), (2180, 13163)]