21340000

素因数分解:

$2^5\times 5^4\times {\mathrm{11}}^1\times {\mathrm{97}}^1$

素因数の和:138

約数の個数: 120

約数和(自身を含む): 57862728

約数和(自身を除く): 36522728

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 44, 50, 55, 80, 88, 97, 100, 110, 125, 160, 176, 194, 200, 220, 250, 275, 352, 388, 400, 440, 485, 500, 550, 625, 776, 800, 880, 970, 1000, 1067, 1100, 1250, 1375, 1552, 1760, 1940, 2000, 2134, 2200, 2425, 2500, 2750, 3104, 3880, 4000, 4268, 4400, 4850, 5000, 5335, 5500, 6875, 7760, 8536, 8800, 9700, 10000, 10670, 11000, 12125, 13750, 15520, 17072, 19400, 20000, 21340, 22000, 24250, 26675, 27500, 34144, 38800, 42680, 44000, 48500, 53350, 55000, 60625, 77600, 85360, 97000, 106700, 110000, 121250, 133375, 170720, 194000, 213400, 220000, 242500, 266750, 388000, 426800, 485000, 533500, 666875, 853600, 970000, 1067000, 1333750, 1940000, 2134000, 2667500, 4268000, 5335000, 10670000, 21340000]

約数ペア:

[(1, 21340000), (2, 10670000), (4, 5335000), (5, 4268000), (8, 2667500), (10, 2134000), (11, 1940000), (16, 1333750), (20, 1067000), (22, 970000), (25, 853600), (32, 666875), (40, 533500), (44, 485000), (50, 426800), (55, 388000), (80, 266750), (88, 242500), (97, 220000), (100, 213400), (110, 194000), (125, 170720), (160, 133375), (176, 121250), (194, 110000), (200, 106700), (220, 97000), (250, 85360), (275, 77600), (352, 60625), (388, 55000), (400, 53350), (440, 48500), (485, 44000), (500, 42680), (550, 38800), (625, 34144), (776, 27500), (800, 26675), (880, 24250), (970, 22000), (1000, 21340), (1067, 20000), (1100, 19400), (1250, 17072), (1375, 15520), (1552, 13750), (1760, 12125), (1940, 11000), (2000, 10670), (2134, 10000), (2200, 9700), (2425, 8800), (2500, 8536), (2750, 7760), (3104, 6875), (3880, 5500), (4000, 5335), (4268, 5000), (4400, 4850)]