19818180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4787}}^1$

素因数の和:4825

約数の個数: 72

約数和(自身を含む): 62741952

約数和(自身を除く): 42923772

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 4787, 9574, 14361, 19148, 23935, 28722, 43083, 47870, 57444, 71805, 86166, 95740, 110101, 143610, 172332, 215415, 220202, 287220, 330303, 430830, 440404, 550505, 660606, 861660, 990909, 1101010, 1321212, 1651515, 1981818, 2202020, 3303030, 3963636, 4954545, 6606060, 9909090, 19818180]

約数ペア:

[(1, 19818180), (2, 9909090), (3, 6606060), (4, 4954545), (5, 3963636), (6, 3303030), (9, 2202020), (10, 1981818), (12, 1651515), (15, 1321212), (18, 1101010), (20, 990909), (23, 861660), (30, 660606), (36, 550505), (45, 440404), (46, 430830), (60, 330303), (69, 287220), (90, 220202), (92, 215415), (115, 172332), (138, 143610), (180, 110101), (207, 95740), (230, 86166), (276, 71805), (345, 57444), (414, 47870), (460, 43083), (690, 28722), (828, 23935), (1035, 19148), (1380, 14361), (2070, 9574), (4140, 4787)]