20978820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{116549}}^1$

素因数の和:116564

約数の個数: 36

約数和(自身を含む): 63636300

約数和(自身を除く): 42657480

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 116549, 233098, 349647, 466196, 582745, 699294, 1048941, 1165490, 1398588, 1748235, 2097882, 2330980, 3496470, 4195764, 5244705, 6992940, 10489410, 20978820]

約数ペア:

[(1, 20978820), (2, 10489410), (3, 6992940), (4, 5244705), (5, 4195764), (6, 3496470), (9, 2330980), (10, 2097882), (12, 1748235), (15, 1398588), (18, 1165490), (20, 1048941), (30, 699294), (36, 582745), (45, 466196), (60, 349647), (90, 233098), (180, 116549)]