20758000

素因数分解:

$2^4\times 5^3\times {\mathrm{97}}^1\times {\mathrm{107}}^1$

素因数の和:227

約数の個数: 80

約数和(自身を含む): 51184224

約数和(自身を除く): 30426224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 97, 100, 107, 125, 194, 200, 214, 250, 388, 400, 428, 485, 500, 535, 776, 856, 970, 1000, 1070, 1552, 1712, 1940, 2000, 2140, 2425, 2675, 3880, 4280, 4850, 5350, 7760, 8560, 9700, 10379, 10700, 12125, 13375, 19400, 20758, 21400, 24250, 26750, 38800, 41516, 42800, 48500, 51895, 53500, 83032, 97000, 103790, 107000, 166064, 194000, 207580, 214000, 259475, 415160, 518950, 830320, 1037900, 1297375, 2075800, 2594750, 4151600, 5189500, 10379000, 20758000]

約数ペア:

[(1, 20758000), (2, 10379000), (4, 5189500), (5, 4151600), (8, 2594750), (10, 2075800), (16, 1297375), (20, 1037900), (25, 830320), (40, 518950), (50, 415160), (80, 259475), (97, 214000), (100, 207580), (107, 194000), (125, 166064), (194, 107000), (200, 103790), (214, 97000), (250, 83032), (388, 53500), (400, 51895), (428, 48500), (485, 42800), (500, 41516), (535, 38800), (776, 26750), (856, 24250), (970, 21400), (1000, 20758), (1070, 19400), (1552, 13375), (1712, 12125), (1940, 10700), (2000, 10379), (2140, 9700), (2425, 8560), (2675, 7760), (3880, 5350), (4280, 4850)]