258532840

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{32479}}^1$

素因数の和:32689

約数の個数: 32

約数和(自身を含む): 584640000

約数和(自身を除く): 326107160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 32479, 64958, 129916, 162395, 259832, 324790, 649580, 1299160, 6463321, 12926642, 25853284, 32316605, 51706568, 64633210, 129266420, 258532840]

約数ペア:

[(1, 258532840), (2, 129266420), (4, 64633210), (5, 51706568), (8, 32316605), (10, 25853284), (20, 12926642), (40, 6463321), (199, 1299160), (398, 649580), (796, 324790), (995, 259832), (1592, 162395), (1990, 129916), (3980, 64958), (7960, 32479)]