80400720

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{643}}^1$

素因数の和:1180

約数の個数: 80

約数和(自身を含む): 250108992

約数和(自身を除く): 169708272

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 521, 643, 1042, 1286, 1563, 1929, 2084, 2572, 2605, 3126, 3215, 3858, 4168, 5144, 5210, 6252, 6430, 7716, 7815, 8336, 9645, 10288, 10420, 12504, 12860, 15432, 15630, 19290, 20840, 25008, 25720, 30864, 31260, 38580, 41680, 51440, 62520, 77160, 125040, 154320, 335003, 670006, 1005009, 1340012, 1675015, 2010018, 2680024, 3350030, 4020036, 5025045, 5360048, 6700060, 8040072, 10050090, 13400120, 16080144, 20100180, 26800240, 40200360, 80400720]

約数ペア:

[(1, 80400720), (2, 40200360), (3, 26800240), (4, 20100180), (5, 16080144), (6, 13400120), (8, 10050090), (10, 8040072), (12, 6700060), (15, 5360048), (16, 5025045), (20, 4020036), (24, 3350030), (30, 2680024), (40, 2010018), (48, 1675015), (60, 1340012), (80, 1005009), (120, 670006), (240, 335003), (521, 154320), (643, 125040), (1042, 77160), (1286, 62520), (1563, 51440), (1929, 41680), (2084, 38580), (2572, 31260), (2605, 30864), (3126, 25720), (3215, 25008), (3858, 20840), (4168, 19290), (5144, 15630), (5210, 15432), (6252, 12860), (6430, 12504), (7716, 10420), (7815, 10288), (8336, 9645)]