19637220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{643}}^1$

素因数の和:1164

約数の個数: 48

約数和(自身を含む): 55177920

約数和(自身を除く): 35540700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 509, 643, 1018, 1286, 1527, 1929, 2036, 2545, 2572, 3054, 3215, 3858, 5090, 6108, 6430, 7635, 7716, 9645, 10180, 12860, 15270, 19290, 30540, 38580, 327287, 654574, 981861, 1309148, 1636435, 1963722, 3272870, 3927444, 4909305, 6545740, 9818610, 19637220]

約数ペア:

[(1, 19637220), (2, 9818610), (3, 6545740), (4, 4909305), (5, 3927444), (6, 3272870), (10, 1963722), (12, 1636435), (15, 1309148), (20, 981861), (30, 654574), (60, 327287), (509, 38580), (643, 30540), (1018, 19290), (1286, 15270), (1527, 12860), (1929, 10180), (2036, 9645), (2545, 7716), (2572, 7635), (3054, 6430), (3215, 6108), (3858, 5090)]