213285640

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{280639}}^1$

素因数の和:280669

約数の個数: 32

約数和(自身を含む): 505152000

約数和(自身を除く): 291866360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 280639, 561278, 1122556, 1403195, 2245112, 2806390, 5332141, 5612780, 10664282, 11225560, 21328564, 26660705, 42657128, 53321410, 106642820, 213285640]

約数ペア:

[(1, 213285640), (2, 106642820), (4, 53321410), (5, 42657128), (8, 26660705), (10, 21328564), (19, 11225560), (20, 10664282), (38, 5612780), (40, 5332141), (76, 2806390), (95, 2245112), (152, 1403195), (190, 1122556), (380, 561278), (760, 280639)]