257192840

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{46933}}^1$

素因数の和:47081

約数の個数: 32

約数和(自身を含む): 582920280

約数和(自身を除く): 325727440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 46933, 93866, 187732, 234665, 375464, 469330, 938660, 1877320, 6429821, 12859642, 25719284, 32149105, 51438568, 64298210, 128596420, 257192840]

約数ペア:

[(1, 257192840), (2, 128596420), (4, 64298210), (5, 51438568), (8, 32149105), (10, 25719284), (20, 12859642), (40, 6429821), (137, 1877320), (274, 938660), (548, 469330), (685, 375464), (1096, 234665), (1370, 187732), (2740, 93866), (5480, 46933)]