405796720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{251}}^1\times {\mathrm{2887}}^1$

素因数の和:3158

約数の個数: 80

約数和(自身を含む): 1082930688

約数和(自身を除く): 677133968

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 251, 280, 502, 560, 1004, 1255, 1757, 2008, 2510, 2887, 3514, 4016, 5020, 5774, 7028, 8785, 10040, 11548, 14056, 14435, 17570, 20080, 20209, 23096, 28112, 28870, 35140, 40418, 46192, 57740, 70280, 80836, 101045, 115480, 140560, 161672, 202090, 230960, 323344, 404180, 724637, 808360, 1449274, 1616720, 2898548, 3623185, 5072459, 5797096, 7246370, 10144918, 11594192, 14492740, 20289836, 25362295, 28985480, 40579672, 50724590, 57970960, 81159344, 101449180, 202898360, 405796720]

約数ペア:

[(1, 405796720), (2, 202898360), (4, 101449180), (5, 81159344), (7, 57970960), (8, 50724590), (10, 40579672), (14, 28985480), (16, 25362295), (20, 20289836), (28, 14492740), (35, 11594192), (40, 10144918), (56, 7246370), (70, 5797096), (80, 5072459), (112, 3623185), (140, 2898548), (251, 1616720), (280, 1449274), (502, 808360), (560, 724637), (1004, 404180), (1255, 323344), (1757, 230960), (2008, 202090), (2510, 161672), (2887, 140560), (3514, 115480), (4016, 101045), (5020, 80836), (5774, 70280), (7028, 57740), (8785, 46192), (10040, 40418), (11548, 35140), (14056, 28870), (14435, 28112), (17570, 23096), (20080, 20209)]