18956808

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:228

約数の個数: 128

約数和(自身を含む): 58396800

約数和(自身を除く): 39439992

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 43, 52, 54, 72, 78, 86, 104, 108, 117, 129, 156, 157, 172, 216, 234, 258, 312, 314, 344, 351, 387, 468, 471, 516, 559, 628, 702, 774, 936, 942, 1032, 1118, 1161, 1256, 1404, 1413, 1548, 1677, 1884, 2041, 2236, 2322, 2808, 2826, 3096, 3354, 3768, 4082, 4239, 4472, 4644, 5031, 5652, 6123, 6708, 6751, 8164, 8478, 9288, 10062, 11304, 12246, 13416, 13502, 15093, 16328, 16956, 18369, 20124, 20253, 24492, 27004, 30186, 33912, 36738, 40248, 40506, 48984, 54008, 55107, 60372, 60759, 73476, 81012, 87763, 110214, 120744, 121518, 146952, 162024, 175526, 182277, 220428, 243036, 263289, 351052, 364554, 440856, 486072, 526578, 702104, 729108, 789867, 1053156, 1458216, 1579734, 2106312, 2369601, 3159468, 4739202, 6318936, 9478404, 18956808]

約数ペア:

[(1, 18956808), (2, 9478404), (3, 6318936), (4, 4739202), (6, 3159468), (8, 2369601), (9, 2106312), (12, 1579734), (13, 1458216), (18, 1053156), (24, 789867), (26, 729108), (27, 702104), (36, 526578), (39, 486072), (43, 440856), (52, 364554), (54, 351052), (72, 263289), (78, 243036), (86, 220428), (104, 182277), (108, 175526), (117, 162024), (129, 146952), (156, 121518), (157, 120744), (172, 110214), (216, 87763), (234, 81012), (258, 73476), (312, 60759), (314, 60372), (344, 55107), (351, 54008), (387, 48984), (468, 40506), (471, 40248), (516, 36738), (559, 33912), (628, 30186), (702, 27004), (774, 24492), (936, 20253), (942, 20124), (1032, 18369), (1118, 16956), (1161, 16328), (1256, 15093), (1404, 13502), (1413, 13416), (1548, 12246), (1677, 11304), (1884, 10062), (2041, 9288), (2236, 8478), (2322, 8164), (2808, 6751), (2826, 6708), (3096, 6123), (3354, 5652), (3768, 5031), (4082, 4644), (4239, 4472)]