278325380

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{69931}}^1$

素因数の和:70139

約数の個数: 24

約数和(自身を含む): 587428800

約数和(自身を除く): 309103420

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 69931, 139862, 279724, 349655, 699310, 1398620, 13916269, 27832538, 55665076, 69581345, 139162690, 278325380]

約数ペア:

[(1, 278325380), (2, 139162690), (4, 69581345), (5, 55665076), (10, 27832538), (20, 13916269), (199, 1398620), (398, 699310), (796, 349655), (995, 279724), (1990, 139862), (3980, 69931)]