19779760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1$

素因数の和:76

約数の個数: 240

約数和(自身を含む): 65352960

約数和(自身を除く): 45573200

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 19, 20, 22, 26, 28, 35, 38, 40, 44, 52, 55, 56, 65, 70, 76, 77, 80, 88, 91, 95, 104, 110, 112, 130, 133, 140, 143, 152, 154, 169, 176, 182, 190, 208, 209, 220, 247, 260, 266, 280, 286, 304, 308, 338, 364, 380, 385, 418, 440, 455, 494, 520, 532, 560, 572, 616, 665, 676, 715, 728, 760, 770, 836, 845, 880, 910, 988, 1001, 1040, 1045, 1064, 1144, 1183, 1232, 1235, 1330, 1352, 1430, 1456, 1463, 1520, 1540, 1672, 1690, 1729, 1820, 1859, 1976, 2002, 2090, 2128, 2288, 2366, 2470, 2660, 2704, 2717, 2860, 2926, 3080, 3211, 3344, 3380, 3458, 3640, 3718, 3952, 4004, 4180, 4732, 4940, 5005, 5320, 5434, 5720, 5852, 5915, 6160, 6422, 6760, 6916, 7280, 7315, 7436, 8008, 8360, 8645, 9295, 9464, 9880, 10010, 10640, 10868, 11440, 11704, 11830, 12844, 13013, 13520, 13585, 13832, 14630, 14872, 16016, 16055, 16720, 17290, 18590, 18928, 19019, 19760, 20020, 21736, 22477, 23408, 23660, 25688, 26026, 27170, 27664, 29260, 29744, 32110, 34580, 35321, 37180, 38038, 40040, 43472, 44954, 47320, 51376, 52052, 54340, 58520, 64220, 65065, 69160, 70642, 74360, 76076, 80080, 89908, 94640, 95095, 104104, 108680, 112385, 117040, 128440, 130130, 138320, 141284, 148720, 152152, 176605, 179816, 190190, 208208, 217360, 224770, 247247, 256880, 260260, 282568, 304304, 353210, 359632, 380380, 449540, 494494, 520520, 565136, 706420, 760760, 899080, 988988, 1041040, 1236235, 1412840, 1521520, 1798160, 1977976, 2472470, 2825680, 3955952, 4944940, 9889880, 19779760]

約数ペア:

[(1, 19779760), (2, 9889880), (4, 4944940), (5, 3955952), (7, 2825680), (8, 2472470), (10, 1977976), (11, 1798160), (13, 1521520), (14, 1412840), (16, 1236235), (19, 1041040), (20, 988988), (22, 899080), (26, 760760), (28, 706420), (35, 565136), (38, 520520), (40, 494494), (44, 449540), (52, 380380), (55, 359632), (56, 353210), (65, 304304), (70, 282568), (76, 260260), (77, 256880), (80, 247247), (88, 224770), (91, 217360), (95, 208208), (104, 190190), (110, 179816), (112, 176605), (130, 152152), (133, 148720), (140, 141284), (143, 138320), (152, 130130), (154, 128440), (169, 117040), (176, 112385), (182, 108680), (190, 104104), (208, 95095), (209, 94640), (220, 89908), (247, 80080), (260, 76076), (266, 74360), (280, 70642), (286, 69160), (304, 65065), (308, 64220), (338, 58520), (364, 54340), (380, 52052), (385, 51376), (418, 47320), (440, 44954), (455, 43472), (494, 40040), (520, 38038), (532, 37180), (560, 35321), (572, 34580), (616, 32110), (665, 29744), (676, 29260), (715, 27664), (728, 27170), (760, 26026), (770, 25688), (836, 23660), (845, 23408), (880, 22477), (910, 21736), (988, 20020), (1001, 19760), (1040, 19019), (1045, 18928), (1064, 18590), (1144, 17290), (1183, 16720), (1232, 16055), (1235, 16016), (1330, 14872), (1352, 14630), (1430, 13832), (1456, 13585), (1463, 13520), (1520, 13013), (1540, 12844), (1672, 11830), (1690, 11704), (1729, 11440), (1820, 10868), (1859, 10640), (1976, 10010), (2002, 9880), (2090, 9464), (2128, 9295), (2288, 8645), (2366, 8360), (2470, 8008), (2660, 7436), (2704, 7315), (2717, 7280), (2860, 6916), (2926, 6760), (3080, 6422), (3211, 6160), (3344, 5915), (3380, 5852), (3458, 5720), (3640, 5434), (3718, 5320), (3952, 5005), (4004, 4940), (4180, 4732)]