17891720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{157}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 51874560

約数和(自身を除く): 33982840

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 37, 40, 44, 55, 56, 70, 74, 77, 88, 110, 140, 148, 154, 157, 185, 220, 259, 280, 296, 308, 314, 370, 385, 407, 440, 518, 616, 628, 740, 770, 785, 814, 1036, 1099, 1256, 1295, 1480, 1540, 1570, 1628, 1727, 2035, 2072, 2198, 2590, 2849, 3080, 3140, 3256, 3454, 4070, 4396, 5180, 5495, 5698, 5809, 6280, 6908, 8140, 8635, 8792, 10360, 10990, 11396, 11618, 12089, 13816, 14245, 16280, 17270, 21980, 22792, 23236, 24178, 28490, 29045, 34540, 40663, 43960, 46472, 48356, 56980, 58090, 60445, 63899, 69080, 81326, 96712, 113960, 116180, 120890, 127798, 162652, 203315, 232360, 241780, 255596, 319495, 325304, 406630, 447293, 483560, 511192, 638990, 813260, 894586, 1277980, 1626520, 1789172, 2236465, 2555960, 3578344, 4472930, 8945860, 17891720]

約数ペア:

[(1, 17891720), (2, 8945860), (4, 4472930), (5, 3578344), (7, 2555960), (8, 2236465), (10, 1789172), (11, 1626520), (14, 1277980), (20, 894586), (22, 813260), (28, 638990), (35, 511192), (37, 483560), (40, 447293), (44, 406630), (55, 325304), (56, 319495), (70, 255596), (74, 241780), (77, 232360), (88, 203315), (110, 162652), (140, 127798), (148, 120890), (154, 116180), (157, 113960), (185, 96712), (220, 81326), (259, 69080), (280, 63899), (296, 60445), (308, 58090), (314, 56980), (370, 48356), (385, 46472), (407, 43960), (440, 40663), (518, 34540), (616, 29045), (628, 28490), (740, 24178), (770, 23236), (785, 22792), (814, 21980), (1036, 17270), (1099, 16280), (1256, 14245), (1295, 13816), (1480, 12089), (1540, 11618), (1570, 11396), (1628, 10990), (1727, 10360), (2035, 8792), (2072, 8635), (2198, 8140), (2590, 6908), (2849, 6280), (3080, 5809), (3140, 5698), (3256, 5495), (3454, 5180), (4070, 4396)]