217460420

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1\times {\mathrm{569}}^1$

素因数の和:872

約数の個数: 48

約数和(自身を含む): 464531760

約数和(自身を除く): 247071340

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 197, 388, 394, 485, 569, 788, 970, 985, 1138, 1940, 1970, 2276, 2845, 3940, 5690, 11380, 19109, 38218, 55193, 76436, 95545, 110386, 112093, 191090, 220772, 224186, 275965, 382180, 448372, 551930, 560465, 1103860, 1120930, 2241860, 10873021, 21746042, 43492084, 54365105, 108730210, 217460420]

約数ペア:

[(1, 217460420), (2, 108730210), (4, 54365105), (5, 43492084), (10, 21746042), (20, 10873021), (97, 2241860), (194, 1120930), (197, 1103860), (388, 560465), (394, 551930), (485, 448372), (569, 382180), (788, 275965), (970, 224186), (985, 220772), (1138, 191090), (1940, 112093), (1970, 110386), (2276, 95545), (2845, 76436), (3940, 55193), (5690, 38218), (11380, 19109)]