21218580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{117881}}^1$

素因数の和:117896

約数の個数: 36

約数和(自身を含む): 64363572

約数和(自身を除く): 43144992

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 117881, 235762, 353643, 471524, 589405, 707286, 1060929, 1178810, 1414572, 1768215, 2121858, 2357620, 3536430, 4243716, 5304645, 7072860, 10609290, 21218580]

約数ペア:

[(1, 21218580), (2, 10609290), (3, 7072860), (4, 5304645), (5, 4243716), (6, 3536430), (9, 2357620), (10, 2121858), (12, 1768215), (15, 1414572), (18, 1178810), (20, 1060929), (30, 707286), (36, 589405), (45, 471524), (60, 353643), (90, 235762), (180, 117881)]