18756944

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 37646400

約数和(自身を除く): 18889456

約数列:

[1, 2, 4, 8, 16, 43, 86, 137, 172, 199, 274, 344, 398, 548, 688, 796, 1096, 1592, 2192, 3184, 5891, 8557, 11782, 17114, 23564, 27263, 34228, 47128, 54526, 68456, 94256, 109052, 136912, 218104, 436208, 1172309, 2344618, 4689236, 9378472, 18756944]

約数ペア:

[(1, 18756944), (2, 9378472), (4, 4689236), (8, 2344618), (16, 1172309), (43, 436208), (86, 218104), (137, 136912), (172, 109052), (199, 94256), (274, 68456), (344, 54526), (398, 47128), (548, 34228), (688, 27263), (796, 23564), (1096, 17114), (1592, 11782), (2192, 8557), (3184, 5891)]