18571720

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{3389}}^1$

素因数の和:3537

約数の個数: 32

約数和(自身を含む): 42103800

約数和(自身を除く): 23532080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 3389, 5480, 6778, 13556, 16945, 27112, 33890, 67780, 135560, 464293, 928586, 1857172, 2321465, 3714344, 4642930, 9285860, 18571720]

約数ペア:

[(1, 18571720), (2, 9285860), (4, 4642930), (5, 3714344), (8, 2321465), (10, 1857172), (20, 928586), (40, 464293), (137, 135560), (274, 67780), (548, 33890), (685, 27112), (1096, 16945), (1370, 13556), (2740, 6778), (3389, 5480)]