809035280

素因数分解:

$2^4\times 5^1\times {\mathrm{1999}}^1\times {\mathrm{5059}}^1$

素因数の和:7071

約数の個数: 40

約数和(自身を含む): 1882320000

約数和(自身を除く): 1073284720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1999, 3998, 5059, 7996, 9995, 10118, 15992, 19990, 20236, 25295, 31984, 39980, 40472, 50590, 79960, 80944, 101180, 159920, 202360, 404720, 10112941, 20225882, 40451764, 50564705, 80903528, 101129410, 161807056, 202258820, 404517640, 809035280]

約数ペア:

[(1, 809035280), (2, 404517640), (4, 202258820), (5, 161807056), (8, 101129410), (10, 80903528), (16, 50564705), (20, 40451764), (40, 20225882), (80, 10112941), (1999, 404720), (3998, 202360), (5059, 159920), (7996, 101180), (9995, 80944), (10118, 79960), (15992, 50590), (19990, 40472), (20236, 39980), (25295, 31984)]