21124512

素因数分解:

$2^5\times 3^2\times {\mathrm{41}}^1\times {\mathrm{1789}}^1$

素因数の和:1846

約数の個数: 72

約数和(自身を含む): 61572420

約数和(自身を除く): 40447908

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 41, 48, 72, 82, 96, 123, 144, 164, 246, 288, 328, 369, 492, 656, 738, 984, 1312, 1476, 1789, 1968, 2952, 3578, 3936, 5367, 5904, 7156, 10734, 11808, 14312, 16101, 21468, 28624, 32202, 42936, 57248, 64404, 73349, 85872, 128808, 146698, 171744, 220047, 257616, 293396, 440094, 515232, 586792, 660141, 880188, 1173584, 1320282, 1760376, 2347168, 2640564, 3520752, 5281128, 7041504, 10562256, 21124512]

約数ペア:

[(1, 21124512), (2, 10562256), (3, 7041504), (4, 5281128), (6, 3520752), (8, 2640564), (9, 2347168), (12, 1760376), (16, 1320282), (18, 1173584), (24, 880188), (32, 660141), (36, 586792), (41, 515232), (48, 440094), (72, 293396), (82, 257616), (96, 220047), (123, 171744), (144, 146698), (164, 128808), (246, 85872), (288, 73349), (328, 64404), (369, 57248), (492, 42936), (656, 32202), (738, 28624), (984, 21468), (1312, 16101), (1476, 14312), (1789, 11808), (1968, 10734), (2952, 7156), (3578, 5904), (3936, 5367)]