21646000

素因数分解:

$2^4\times 5^3\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:239

約数の個数: 80

約数和(自身を含む): 53389440

約数和(自身を除く): 31743440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 79, 80, 100, 125, 137, 158, 200, 250, 274, 316, 395, 400, 500, 548, 632, 685, 790, 1000, 1096, 1264, 1370, 1580, 1975, 2000, 2192, 2740, 3160, 3425, 3950, 5480, 6320, 6850, 7900, 9875, 10823, 10960, 13700, 15800, 17125, 19750, 21646, 27400, 31600, 34250, 39500, 43292, 54115, 54800, 68500, 79000, 86584, 108230, 137000, 158000, 173168, 216460, 270575, 274000, 432920, 541150, 865840, 1082300, 1352875, 2164600, 2705750, 4329200, 5411500, 10823000, 21646000]

約数ペア:

[(1, 21646000), (2, 10823000), (4, 5411500), (5, 4329200), (8, 2705750), (10, 2164600), (16, 1352875), (20, 1082300), (25, 865840), (40, 541150), (50, 432920), (79, 274000), (80, 270575), (100, 216460), (125, 173168), (137, 158000), (158, 137000), (200, 108230), (250, 86584), (274, 79000), (316, 68500), (395, 54800), (400, 54115), (500, 43292), (548, 39500), (632, 34250), (685, 31600), (790, 27400), (1000, 21646), (1096, 19750), (1264, 17125), (1370, 15800), (1580, 13700), (1975, 10960), (2000, 10823), (2192, 9875), (2740, 7900), (3160, 6850), (3425, 6320), (3950, 5480)]