18920800

素因数分解:

$2^5\times 5^2\times {\mathrm{67}}^1\times {\mathrm{353}}^1$

素因数の和:440

約数の個数: 72

約数和(自身を含む): 47012616

約数和(自身を除く): 28091816

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 67, 80, 100, 134, 160, 200, 268, 335, 353, 400, 536, 670, 706, 800, 1072, 1340, 1412, 1675, 1765, 2144, 2680, 2824, 3350, 3530, 5360, 5648, 6700, 7060, 8825, 10720, 11296, 13400, 14120, 17650, 23651, 26800, 28240, 35300, 47302, 53600, 56480, 70600, 94604, 118255, 141200, 189208, 236510, 282400, 378416, 473020, 591275, 756832, 946040, 1182550, 1892080, 2365100, 3784160, 4730200, 9460400, 18920800]

約数ペア:

[(1, 18920800), (2, 9460400), (4, 4730200), (5, 3784160), (8, 2365100), (10, 1892080), (16, 1182550), (20, 946040), (25, 756832), (32, 591275), (40, 473020), (50, 378416), (67, 282400), (80, 236510), (100, 189208), (134, 141200), (160, 118255), (200, 94604), (268, 70600), (335, 56480), (353, 53600), (400, 47302), (536, 35300), (670, 28240), (706, 26800), (800, 23651), (1072, 17650), (1340, 14120), (1412, 13400), (1675, 11296), (1765, 10720), (2144, 8825), (2680, 7060), (2824, 6700), (3350, 5648), (3530, 5360)]