1640152720

素因数分解:

$2^4\times 5^1\times {\mathrm{20501909}}^1$

素因数の和:20501922

約数の個数: 20

約数和(自身を含む): 3813355260

約数和(自身を除く): 2173202540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20501909, 41003818, 82007636, 102509545, 164015272, 205019090, 328030544, 410038180, 820076360, 1640152720]

約数ペア:

[(1, 1640152720), (2, 820076360), (4, 410038180), (5, 328030544), (8, 205019090), (10, 164015272), (16, 102509545), (20, 82007636), (40, 41003818), (80, 20501909)]