21557552

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{70913}}^1$

素因数の和:70940

約数の個数: 20

約数和(自身を含む): 43966680

約数和(自身を除く): 22409128

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 70913, 141826, 283652, 567304, 1134608, 1347347, 2694694, 5389388, 10778776, 21557552]

約数ペア:

[(1, 21557552), (2, 10778776), (4, 5389388), (8, 2694694), (16, 1347347), (19, 1134608), (38, 567304), (76, 283652), (152, 141826), (304, 70913)]