555550000

素因数分解:

$2^4\times 5^5\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:345

約数の個数: 120

約数和(自身を含む): 1383286464

約数和(自身を除く): 827736464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 41, 50, 80, 82, 100, 125, 164, 200, 205, 250, 271, 328, 400, 410, 500, 542, 625, 656, 820, 1000, 1025, 1084, 1250, 1355, 1640, 2000, 2050, 2168, 2500, 2710, 3125, 3280, 4100, 4336, 5000, 5125, 5420, 6250, 6775, 8200, 10000, 10250, 10840, 11111, 12500, 13550, 16400, 20500, 21680, 22222, 25000, 25625, 27100, 33875, 41000, 44444, 50000, 51250, 54200, 55555, 67750, 82000, 88888, 102500, 108400, 111110, 128125, 135500, 169375, 177776, 205000, 222220, 256250, 271000, 277775, 338750, 410000, 444440, 512500, 542000, 555550, 677500, 846875, 888880, 1025000, 1111100, 1355000, 1388875, 1693750, 2050000, 2222200, 2710000, 2777750, 3387500, 4444400, 5555500, 6775000, 6944375, 11111000, 13550000, 13888750, 22222000, 27777500, 34721875, 55555000, 69443750, 111110000, 138887500, 277775000, 555550000]

約数ペア:

[(1, 555550000), (2, 277775000), (4, 138887500), (5, 111110000), (8, 69443750), (10, 55555000), (16, 34721875), (20, 27777500), (25, 22222000), (40, 13888750), (41, 13550000), (50, 11111000), (80, 6944375), (82, 6775000), (100, 5555500), (125, 4444400), (164, 3387500), (200, 2777750), (205, 2710000), (250, 2222200), (271, 2050000), (328, 1693750), (400, 1388875), (410, 1355000), (500, 1111100), (542, 1025000), (625, 888880), (656, 846875), (820, 677500), (1000, 555550), (1025, 542000), (1084, 512500), (1250, 444440), (1355, 410000), (1640, 338750), (2000, 277775), (2050, 271000), (2168, 256250), (2500, 222220), (2710, 205000), (3125, 177776), (3280, 169375), (4100, 135500), (4336, 128125), (5000, 111110), (5125, 108400), (5420, 102500), (6250, 88888), (6775, 82000), (8200, 67750), (10000, 55555), (10250, 54200), (10840, 51250), (11111, 50000), (12500, 44444), (13550, 41000), (16400, 33875), (20500, 27100), (21680, 25625), (22222, 25000)]