20805216440

素因数分解:

$2^3\times 5^1\times {\mathrm{5021}}^1\times {\mathrm{103591}}^1$

素因数の和:108623

約数の個数: 32

約数和(自身を含む): 46821512160

約数和(自身を除く): 26016295720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 5021, 10042, 20084, 25105, 40168, 50210, 100420, 103591, 200840, 207182, 414364, 517955, 828728, 1035910, 2071820, 4143640, 520130411, 1040260822, 2080521644, 2600652055, 4161043288, 5201304110, 10402608220, 20805216440]

約数ペア:

[(1, 20805216440), (2, 10402608220), (4, 5201304110), (5, 4161043288), (8, 2600652055), (10, 2080521644), (20, 1040260822), (40, 520130411), (5021, 4143640), (10042, 2071820), (20084, 1035910), (25105, 828728), (40168, 517955), (50210, 414364), (100420, 207182), (103591, 200840)]