198981920

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{12821}}^1$

素因数の和:12933

約数の個数: 48

約数和(自身を含む): 474978168

約数和(自身を除く): 275996248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1552, 1940, 3104, 3880, 7760, 12821, 15520, 25642, 51284, 64105, 102568, 128210, 205136, 256420, 410272, 512840, 1025680, 1243637, 2051360, 2487274, 4974548, 6218185, 9949096, 12436370, 19898192, 24872740, 39796384, 49745480, 99490960, 198981920]

約数ペア:

[(1, 198981920), (2, 99490960), (4, 49745480), (5, 39796384), (8, 24872740), (10, 19898192), (16, 12436370), (20, 9949096), (32, 6218185), (40, 4974548), (80, 2487274), (97, 2051360), (160, 1243637), (194, 1025680), (388, 512840), (485, 410272), (776, 256420), (970, 205136), (1552, 128210), (1940, 102568), (3104, 64105), (3880, 51284), (7760, 25642), (12821, 15520)]