20065810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:606

約数の個数: 32

約数和(自身を含む): 37422000

約数和(自身を除く): 17356190

約数列:

[1, 2, 5, 10, 41, 82, 109, 205, 218, 410, 449, 545, 898, 1090, 2245, 4469, 4490, 8938, 18409, 22345, 36818, 44690, 48941, 92045, 97882, 184090, 244705, 489410, 2006581, 4013162, 10032905, 20065810]

約数ペア:

[(1, 20065810), (2, 10032905), (5, 4013162), (10, 2006581), (41, 489410), (82, 244705), (109, 184090), (205, 97882), (218, 92045), (410, 48941), (449, 44690), (545, 36818), (898, 22345), (1090, 18409), (2245, 8938), (4469, 4490)]