20801472800

素因数分解:

$2^5\times 5^2\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{1601}}^1$

素因数の和:1879

約数の個数: 144

約数和(自身を含む): 51623649000

約数和(自身を除く): 30822176200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 109, 149, 160, 200, 218, 298, 400, 436, 545, 596, 745, 800, 872, 1090, 1192, 1490, 1601, 1744, 2180, 2384, 2725, 2980, 3202, 3488, 3725, 4360, 4768, 5450, 5960, 6404, 7450, 8005, 8720, 10900, 11920, 12808, 14900, 16010, 16241, 17440, 21800, 23840, 25616, 29800, 32020, 32482, 40025, 43600, 51232, 59600, 64040, 64964, 80050, 81205, 87200, 119200, 128080, 129928, 160100, 162410, 174509, 238549, 256160, 259856, 320200, 324820, 349018, 406025, 477098, 519712, 640400, 649640, 698036, 812050, 872545, 954196, 1192745, 1280800, 1299280, 1396072, 1624100, 1745090, 1908392, 2385490, 2598560, 2792144, 3248200, 3490180, 3816784, 4362725, 4770980, 5584288, 5963725, 6496400, 6980360, 7633568, 8725450, 9541960, 11927450, 12992800, 13960720, 17450900, 19083920, 23854900, 26001841, 27921440, 34901800, 38167840, 47709800, 52003682, 69803600, 95419600, 104007364, 130009205, 139607200, 190839200, 208014728, 260018410, 416029456, 520036820, 650046025, 832058912, 1040073640, 1300092050, 2080147280, 2600184100, 4160294560, 5200368200, 10400736400, 20801472800]

約数ペア:

[(1, 20801472800), (2, 10400736400), (4, 5200368200), (5, 4160294560), (8, 2600184100), (10, 2080147280), (16, 1300092050), (20, 1040073640), (25, 832058912), (32, 650046025), (40, 520036820), (50, 416029456), (80, 260018410), (100, 208014728), (109, 190839200), (149, 139607200), (160, 130009205), (200, 104007364), (218, 95419600), (298, 69803600), (400, 52003682), (436, 47709800), (545, 38167840), (596, 34901800), (745, 27921440), (800, 26001841), (872, 23854900), (1090, 19083920), (1192, 17450900), (1490, 13960720), (1601, 12992800), (1744, 11927450), (2180, 9541960), (2384, 8725450), (2725, 7633568), (2980, 6980360), (3202, 6496400), (3488, 5963725), (3725, 5584288), (4360, 4770980), (4768, 4362725), (5450, 3816784), (5960, 3490180), (6404, 3248200), (7450, 2792144), (8005, 2598560), (8720, 2385490), (10900, 1908392), (11920, 1745090), (12808, 1624100), (14900, 1396072), (16010, 1299280), (16241, 1280800), (17440, 1192745), (21800, 954196), (23840, 872545), (25616, 812050), (29800, 698036), (32020, 649640), (32482, 640400), (40025, 519712), (43600, 477098), (51232, 406025), (59600, 349018), (64040, 324820), (64964, 320200), (80050, 259856), (81205, 256160), (87200, 238549), (119200, 174509), (128080, 162410), (129928, 160100)]