19988820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{111049}}^1$

素因数の和:111064

約数の個数: 36

約数和(自身を含む): 60633300

約数和(自身を除く): 40644480

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 111049, 222098, 333147, 444196, 555245, 666294, 999441, 1110490, 1332588, 1665735, 1998882, 2220980, 3331470, 3997764, 4997205, 6662940, 9994410, 19988820]

約数ペア:

[(1, 19988820), (2, 9994410), (3, 6662940), (4, 4997205), (5, 3997764), (6, 3331470), (9, 2220980), (10, 1998882), (12, 1665735), (15, 1332588), (18, 1110490), (20, 999441), (30, 666294), (36, 555245), (45, 444196), (60, 333147), (90, 222098), (180, 111049)]