21439790

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{5939}}^1$

素因数の和:5984

約数の個数: 24

約数和(自身を含む): 40736520

約数和(自身を除く): 19296730

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 361, 722, 1805, 3610, 5939, 11878, 29695, 59390, 112841, 225682, 564205, 1128410, 2143979, 4287958, 10719895, 21439790]

約数ペア:

[(1, 21439790), (2, 10719895), (5, 4287958), (10, 2143979), (19, 1128410), (38, 564205), (95, 225682), (190, 112841), (361, 59390), (722, 29695), (1805, 11878), (3610, 5939)]