20916168

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1$

素因数の和:247

約数の個数: 128

約数和(自身を含む): 65829120

約数和(自身を除く): 44912952

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 21, 24, 26, 28, 39, 42, 52, 56, 61, 78, 84, 91, 104, 122, 156, 157, 168, 182, 183, 244, 273, 312, 314, 364, 366, 427, 471, 488, 546, 628, 728, 732, 793, 854, 942, 1092, 1099, 1256, 1281, 1464, 1586, 1708, 1884, 2041, 2184, 2198, 2379, 2562, 3172, 3297, 3416, 3768, 4082, 4396, 4758, 5124, 5551, 6123, 6344, 6594, 8164, 8792, 9516, 9577, 10248, 11102, 12246, 13188, 14287, 16328, 16653, 19032, 19154, 22204, 24492, 26376, 28574, 28731, 33306, 38308, 42861, 44408, 48984, 57148, 57462, 66612, 67039, 76616, 85722, 114296, 114924, 124501, 133224, 134078, 171444, 201117, 229848, 249002, 268156, 342888, 373503, 402234, 498004, 536312, 747006, 804468, 871507, 996008, 1494012, 1608936, 1743014, 2614521, 2988024, 3486028, 5229042, 6972056, 10458084, 20916168]

約数ペア:

[(1, 20916168), (2, 10458084), (3, 6972056), (4, 5229042), (6, 3486028), (7, 2988024), (8, 2614521), (12, 1743014), (13, 1608936), (14, 1494012), (21, 996008), (24, 871507), (26, 804468), (28, 747006), (39, 536312), (42, 498004), (52, 402234), (56, 373503), (61, 342888), (78, 268156), (84, 249002), (91, 229848), (104, 201117), (122, 171444), (156, 134078), (157, 133224), (168, 124501), (182, 114924), (183, 114296), (244, 85722), (273, 76616), (312, 67039), (314, 66612), (364, 57462), (366, 57148), (427, 48984), (471, 44408), (488, 42861), (546, 38308), (628, 33306), (728, 28731), (732, 28574), (793, 26376), (854, 24492), (942, 22204), (1092, 19154), (1099, 19032), (1256, 16653), (1281, 16328), (1464, 14287), (1586, 13188), (1708, 12246), (1884, 11102), (2041, 10248), (2184, 9577), (2198, 9516), (2379, 8792), (2562, 8164), (3172, 6594), (3297, 6344), (3416, 6123), (3768, 5551), (4082, 5124), (4396, 4758)]