21146000

素因数分解:

$2^4\times 5^3\times {\mathrm{97}}^1\times {\mathrm{109}}^1$

素因数の和:229

約数の個数: 80

約数和(自身を含む): 52132080

約数和(自身を除く): 30986080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 97, 100, 109, 125, 194, 200, 218, 250, 388, 400, 436, 485, 500, 545, 776, 872, 970, 1000, 1090, 1552, 1744, 1940, 2000, 2180, 2425, 2725, 3880, 4360, 4850, 5450, 7760, 8720, 9700, 10573, 10900, 12125, 13625, 19400, 21146, 21800, 24250, 27250, 38800, 42292, 43600, 48500, 52865, 54500, 84584, 97000, 105730, 109000, 169168, 194000, 211460, 218000, 264325, 422920, 528650, 845840, 1057300, 1321625, 2114600, 2643250, 4229200, 5286500, 10573000, 21146000]

約数ペア:

[(1, 21146000), (2, 10573000), (4, 5286500), (5, 4229200), (8, 2643250), (10, 2114600), (16, 1321625), (20, 1057300), (25, 845840), (40, 528650), (50, 422920), (80, 264325), (97, 218000), (100, 211460), (109, 194000), (125, 169168), (194, 109000), (200, 105730), (218, 97000), (250, 84584), (388, 54500), (400, 52865), (436, 48500), (485, 43600), (500, 42292), (545, 38800), (776, 27250), (872, 24250), (970, 21800), (1000, 21146), (1090, 19400), (1552, 13625), (1744, 12125), (1940, 10900), (2000, 10573), (2180, 9700), (2425, 8720), (2725, 7760), (3880, 5450), (4360, 4850)]