728840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1$

素因数の和:174

約数の個数: 64

約数和(自身を含む): 1987200

約数和(自身を除く): 1258360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 137, 140, 152, 190, 266, 274, 280, 380, 532, 548, 665, 685, 760, 959, 1064, 1096, 1330, 1370, 1918, 2603, 2660, 2740, 3836, 4795, 5206, 5320, 5480, 7672, 9590, 10412, 13015, 18221, 19180, 20824, 26030, 36442, 38360, 52060, 72884, 91105, 104120, 145768, 182210, 364420, 728840]

約数ペア:

[(1, 728840), (2, 364420), (4, 182210), (5, 145768), (7, 104120), (8, 91105), (10, 72884), (14, 52060), (19, 38360), (20, 36442), (28, 26030), (35, 20824), (38, 19180), (40, 18221), (56, 13015), (70, 10412), (76, 9590), (95, 7672), (133, 5480), (137, 5320), (140, 5206), (152, 4795), (190, 3836), (266, 2740), (274, 2660), (280, 2603), (380, 1918), (532, 1370), (548, 1330), (665, 1096), (685, 1064), (760, 959)]