210005000

素因数分解:

$2^3\times 5^4\times {\mathrm{97}}^1\times {\mathrm{433}}^1$

素因数の和:556

約数の個数: 80

約数和(自身を含む): 498262380

約数和(自身を除く): 288257380

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 97, 100, 125, 194, 200, 250, 388, 433, 485, 500, 625, 776, 866, 970, 1000, 1250, 1732, 1940, 2165, 2425, 2500, 3464, 3880, 4330, 4850, 5000, 8660, 9700, 10825, 12125, 17320, 19400, 21650, 24250, 42001, 43300, 48500, 54125, 60625, 84002, 86600, 97000, 108250, 121250, 168004, 210005, 216500, 242500, 270625, 336008, 420010, 433000, 485000, 541250, 840020, 1050025, 1082500, 1680040, 2100050, 2165000, 4200100, 5250125, 8400200, 10500250, 21000500, 26250625, 42001000, 52501250, 105002500, 210005000]

約数ペア:

[(1, 210005000), (2, 105002500), (4, 52501250), (5, 42001000), (8, 26250625), (10, 21000500), (20, 10500250), (25, 8400200), (40, 5250125), (50, 4200100), (97, 2165000), (100, 2100050), (125, 1680040), (194, 1082500), (200, 1050025), (250, 840020), (388, 541250), (433, 485000), (485, 433000), (500, 420010), (625, 336008), (776, 270625), (866, 242500), (970, 216500), (1000, 210005), (1250, 168004), (1732, 121250), (1940, 108250), (2165, 97000), (2425, 86600), (2500, 84002), (3464, 60625), (3880, 54125), (4330, 48500), (4850, 43300), (5000, 42001), (8660, 24250), (9700, 21650), (10825, 19400), (12125, 17320)]