2018012840

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{256093}}^1$

素因数の和:256301

約数の個数: 32

約数和(自身を含む): 4563595080

約数和(自身を除く): 2545582240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3940, 7880, 256093, 512186, 1024372, 1280465, 2048744, 2560930, 5121860, 10243720, 50450321, 100900642, 201801284, 252251605, 403602568, 504503210, 1009006420, 2018012840]

約数ペア:

[(1, 2018012840), (2, 1009006420), (4, 504503210), (5, 403602568), (8, 252251605), (10, 201801284), (20, 100900642), (40, 50450321), (197, 10243720), (394, 5121860), (788, 2560930), (985, 2048744), (1576, 1280465), (1970, 1024372), (3940, 512186), (7880, 256093)]