55555000

素因数分解:

$2^3\times 5^4\times {\mathrm{41}}^1\times {\mathrm{271}}^1$

素因数の和:338

約数の個数: 80

約数和(自身を含む): 133832160

約数和(自身を除く): 78277160

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 125, 164, 200, 205, 250, 271, 328, 410, 500, 542, 625, 820, 1000, 1025, 1084, 1250, 1355, 1640, 2050, 2168, 2500, 2710, 4100, 5000, 5125, 5420, 6775, 8200, 10250, 10840, 11111, 13550, 20500, 22222, 25625, 27100, 33875, 41000, 44444, 51250, 54200, 55555, 67750, 88888, 102500, 111110, 135500, 169375, 205000, 222220, 271000, 277775, 338750, 444440, 555550, 677500, 1111100, 1355000, 1388875, 2222200, 2777750, 5555500, 6944375, 11111000, 13888750, 27777500, 55555000]

約数ペア:

[(1, 55555000), (2, 27777500), (4, 13888750), (5, 11111000), (8, 6944375), (10, 5555500), (20, 2777750), (25, 2222200), (40, 1388875), (41, 1355000), (50, 1111100), (82, 677500), (100, 555550), (125, 444440), (164, 338750), (200, 277775), (205, 271000), (250, 222220), (271, 205000), (328, 169375), (410, 135500), (500, 111110), (542, 102500), (625, 88888), (820, 67750), (1000, 55555), (1025, 54200), (1084, 51250), (1250, 44444), (1355, 41000), (1640, 33875), (2050, 27100), (2168, 25625), (2500, 22222), (2710, 20500), (4100, 13550), (5000, 11111), (5125, 10840), (5420, 10250), (6775, 8200)]