18517520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{769}}^1$

素因数の和:832

約数の個数: 80

約数和(自身を含む): 50413440

約数和(自身を除く): 31895920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 43, 56, 70, 80, 86, 112, 140, 172, 215, 280, 301, 344, 430, 560, 602, 688, 769, 860, 1204, 1505, 1538, 1720, 2408, 3010, 3076, 3440, 3845, 4816, 5383, 6020, 6152, 7690, 10766, 12040, 12304, 15380, 21532, 24080, 26915, 30760, 33067, 43064, 53830, 61520, 66134, 86128, 107660, 132268, 165335, 215320, 231469, 264536, 330670, 430640, 462938, 529072, 661340, 925876, 1157345, 1322680, 1851752, 2314690, 2645360, 3703504, 4629380, 9258760, 18517520]

約数ペア:

[(1, 18517520), (2, 9258760), (4, 4629380), (5, 3703504), (7, 2645360), (8, 2314690), (10, 1851752), (14, 1322680), (16, 1157345), (20, 925876), (28, 661340), (35, 529072), (40, 462938), (43, 430640), (56, 330670), (70, 264536), (80, 231469), (86, 215320), (112, 165335), (140, 132268), (172, 107660), (215, 86128), (280, 66134), (301, 61520), (344, 53830), (430, 43064), (560, 33067), (602, 30760), (688, 26915), (769, 24080), (860, 21532), (1204, 15380), (1505, 12304), (1538, 12040), (1720, 10766), (2408, 7690), (3010, 6152), (3076, 6020), (3440, 5383), (3845, 4816)]