20429360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{191}}^2$

素因数の和:402

約数の個数: 60

約数和(自身を含む): 54569424

約数和(自身を除く): 34140064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 191, 280, 382, 560, 764, 955, 1337, 1528, 1910, 2674, 3056, 3820, 5348, 6685, 7640, 10696, 13370, 15280, 21392, 26740, 36481, 53480, 72962, 106960, 145924, 182405, 255367, 291848, 364810, 510734, 583696, 729620, 1021468, 1276835, 1459240, 2042936, 2553670, 2918480, 4085872, 5107340, 10214680, 20429360]

約数ペア:

[(1, 20429360), (2, 10214680), (4, 5107340), (5, 4085872), (7, 2918480), (8, 2553670), (10, 2042936), (14, 1459240), (16, 1276835), (20, 1021468), (28, 729620), (35, 583696), (40, 510734), (56, 364810), (70, 291848), (80, 255367), (112, 182405), (140, 145924), (191, 106960), (280, 72962), (382, 53480), (560, 36481), (764, 26740), (955, 21392), (1337, 15280), (1528, 13370), (1910, 10696), (2674, 7640), (3056, 6685), (3820, 5348)]