20100180

素因数分解:

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

素因数の和:1176

約数の個数: 48

約数和(自身を含む): 56476224

約数和(自身を除く): 36376044

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 521, 643, 1042, 1286, 1563, 1929, 2084, 2572, 2605, 3126, 3215, 3858, 5210, 6252, 6430, 7716, 7815, 9645, 10420, 12860, 15630, 19290, 31260, 38580, 335003, 670006, 1005009, 1340012, 1675015, 2010018, 3350030, 4020036, 5025045, 6700060, 10050090, 20100180]

約数ペア:

[(1, 20100180), (2, 10050090), (3, 6700060), (4, 5025045), (5, 4020036), (6, 3350030), (10, 2010018), (12, 1675015), (15, 1340012), (20, 1005009), (30, 670006), (60, 335003), (521, 38580), (643, 31260), (1042, 19290), (1286, 15630), (1563, 12860), (1929, 10420), (2084, 9645), (2572, 7815), (2605, 7716), (3126, 6430), (3215, 6252), (3858, 5210)]