389765380

素因数分解:

$2^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{97931}}^1$

素因数の和:98139

約数の個数: 24

約数和(自身を含む): 822628800

約数和(自身を除く): 432863420

約数列:

[1, 2, 4, 5, 10, 20, 199, 398, 796, 995, 1990, 3980, 97931, 195862, 391724, 489655, 979310, 1958620, 19488269, 38976538, 77953076, 97441345, 194882690, 389765380]

約数ペア:

[(1, 389765380), (2, 194882690), (4, 97441345), (5, 77953076), (10, 38976538), (20, 19488269), (199, 1958620), (398, 979310), (796, 489655), (995, 391724), (1990, 195862), (3980, 97931)]